ORCID Profile
0000-0002-8841-0711
Current Organisation
Chongqing University
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Publisher: Frontiers Media SA
Date: 06-01-2022
DOI: 10.3389/FPUBH.2021.788922
Abstract: The suitability and feasibility of public-private partnership (PPP) patterns in a rural context have not been well-documented and understood. To address this research gap and practical plight, this study aims to analyze the rural resident's willingness to pay for and participate in the improvement of rural sanitation facilities, and further explore the drivers and barriers affecting their decisions. This study was performed in rural areas of three western provinces, including Shaanxi, Ningxia, and Inner Mongolia, of western China's rural areas by conducting a survey on 1,248 rural residents. In Inner Mongolia, the proportion of respondents who were willing to pay was highest, while the proportion of respondents who may provide labor was lowest among the three provinces. Respondents from Ningxia had the least willing to pay, and respondents from Shaanxi had the highest willingness to participate. Overall, respondents' rural (living) duration time, personal interest in local government notice, and the latest time when the sanitation facilities were improved could significantly affect their willingness. In Inner Mongolia, occupation and water availability could significantly influence respondents' willingness, and both gender and health conditions had significant impacts. In Ningxia, respondents' personal interest in local government notice had a notable impact on willingness, and low-income respondents showed a more notable willingness to pay and participate. In Shaanxi, occupation and water availability could significantly influence respondents' willingness. Respondents' personal interest in local government notice had a notable impact on their willingness. This study is of significant importance to understand rural resident's participation in sanitation infrastructure improvement to support relevant PPP projects, and is important to solve poverty-caused dilemmas.
Publisher: Elsevier BV
Date: 03-2018
Publisher: Springer Science and Business Media LLC
Date: 03-10-2021
DOI: 10.1007/S11356-021-16684-3
Abstract: In recent years, moisture buffering materials for interior finishing have received much attention for their ability to regulate indoor humidity passively. It is necessary to investigate the potential of such materials' moisture buffering performance before application because the effect is highly climate and material dependent. However, existing studies in China lack a comprehensive overview of the moisture buffering potential of different interior finishing materials throughout the large country with a wide spectrum of climates. This paper aims to outline the moisture buffering potential for office buildings in various climates in China through numerical methods. Specifically, simulations in 15 representative Chinese cities are conducted with five interior finishing materials under two heating, ventilation, and air conditioning (HVAC) scenarios. The results show that the moisture buffering materials hold a general potential to regulate indoor humidity conditions and reduce buildings' HVAC load. Such benefits are evident in the mild climate but weak in humid areas. The moisture buffering effect also displays significant seasonal variations and could worsen indoor humidity conditions in some cases, indicating the importance of utilizing moisture buffering materials properly. In addition, although moisture buffering materials can reduce the HVAC load, the reduction is limited, within 3 kWh/m
Publisher: Elsevier BV
Date: 04-2014
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 05-2019
Publisher: Springer International Publishing
Date: 2022
Publisher: MDPI AG
Date: 31-08-2022
DOI: 10.3390/APP12178784
Abstract: This study proposes the technology of “runoff storage and seepage utilization” for achieving purification of road rainfall–runoff and presents a multi-level series purification system (PBT-GR) comprising porous asphalt pavement (PAP), a bioretention system (BS), a storage tank (T) and a hydroponic green roof (GR). The operation parameters of each component unit were optimized and the contribution of each unit to pollution was analyzed. The results showed that under typical simulated rainfall, the suspended solids (SS), total nitrogen (TN), total phosphorus (TP), Pb, Zn and Cu removal rates by filtration and interception of porous pavement were 62.26 ± 3.19%, 16.29 ± 1.74%, 29.27 ± 1.37%, 37.61 ± 2.58%, 35.57 ± 4.64% and 31.17 ± 3.27%, respectively. The average concentrations of SS, TN, TP, Pb, Zn and Cu in the effluent of the PBT-GR system were 14.70 ± 2.21 mg/L, 1.52 ± 0.24 mg/L, 0.14 ± 0.04 mg/L, 0.09 ± 0.04 mg/L, 0.11 ± 0.03 mg/L and 0.04 ± 0.01mg/L, respectively, which met the water quality standards recommended in the Chinese guidelines and showed a high adaptability to pollution load. The contents of pesticide residues and heavy metals in cultivated vegetables met the national standards. The period required to recoup the investment in the system was approximately 3 years, indicating its good economic feasibility. The present study can provide a valuable reference of the construction of an efficient, low consumption and sustainable urban stormwater treatment system and can contribute to the improvement in the quality of the urban water environment.
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 08-2014
Publisher: Elsevier BV
Date: 05-2023
Publisher: Springer International Publishing
Date: 2022
Publisher: Frontiers Media SA
Date: 14-07-2022
DOI: 10.3389/FENVS.2022.940482
Abstract: Water is the source of life and the fundamental element of ecology, and climate is inseparable from water. To evaluate the influence of water-adaptive space in a traditional Weizi (polder village) settlement on its microclimate, the authors analyzed the morphological characteristics of such a polder village and applied the ENVI-met model to simulate the impact of water bodies and village morphological elements on human thermal comfort. This paper demonstrates the positive impact of water bodies on improving the thermal environment of a village and regulating its microclimate by quantifying the impact of morphological elements of the settlement on microclimate. The results indicate that: 1) The simulation model fits the actual measurements well, and the simulation accurately reflects experimental results 2) In summer, the cooling effect of water bodies is better in the afternoon than in the morning, especially from 12:00 to 15:00. The cooling effect is significantly correlated with the distance to water bodies, i.e., the closer, the better 3) Building density and man-made underlying surface are negatively correlated with temperature, humidity, and Physiological Equivalent Temperature value, while greening rate and water body rate are positively correlated with microclimate. Overall, water bodies can improve outdoor comfort in summer and thus should be protected and developed in rural planning and design. Villages can be built around water bodies for a maximized cooling effect, and microclimate comfort can be effectively improved by increasing green plants near the village center, and reducing man-made underlying surface and building density. The results of this study will guide the improvement of the habitat environment in the process of rural revitalization, as well as the protection and re-development of traditional villages.
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 03-2019
Publisher: De Gruyter
Date: 21-08-2017
Publisher: Elsevier BV
Date: 2023
Publisher: MDPI AG
Date: 23-07-2020
Abstract: Studies on urban ventilation indicate that urban ventilation performance is highly dependent on urban morphology. Some studies have linked local-scale urban ventilation performance with the local climate zone (LCZ) that is proposed for surface temperature studies. However, there is a lack of evidence-based studies showing LCZ ventilation performance and affirming the reliability of using the LCZ classification scheme to demonstrate local-scale urban ventilation performance. Therefore, this study aims to analyse LCZ ventilation performances in order to understand the suitability of using the LCZ classification scheme to indicate local-scale urban ventilation performance. This study was conducted in Shenyang, China, with wind information at 16 weather stations in 2018. The results indicate that the Shenyang weather station had an annual mean wind speed of 2.07 m/s, while the mean wind speed of the overall 16 stations was much lower, only 1.44 m/s in value. The mean wind speed at Shenyang weather station and the 16 stations varied with seasons, day and night and precipitation conditions. The spring diurnal mean wind was strong with the speeds of 3.56 m/s and 2.21 m/s at Shenyang weather station and the 16 stations, respectively. The wind speed (2.21 m/s at Shenyang weather station) under precipitation conditions was higher than that (1.75 m/s at Shenyang weather station) under no precipitation conditions. Downtown ventilation performance was weaker than the approaching wind background, where the relative mean wind speed in the downtown area was only 0.53, much less than 1.0. The downtown ventilation performance also varied with seasons, day and night and precipitation conditions, where spring diurnal downtown ventilation performance was the weakest and the winter nocturnal downtown ventilation performance was the strongest. Moreover, the annual mean wind speed of the 16 zones decreased from the sparse, open low-rise zones to the compact midrise zones, indicating the suitability of using LCZ classification scheme to indicate local-scale urban ventilation performance. The high spatial correlation coefficients under different seasons, day and night and precipitation conditions, ranging between 0.68 and 0.99, further affirmed that LCZ classification scheme is also suitable to indicate local-scale urban ventilation performance, despite without the consideration of street structure like precinct ventilation zone scheme.
Publisher: Springer Science and Business Media LLC
Date: 04-02-2021
Publisher: Springer Science and Business Media LLC
Date: 19-09-2020
Publisher: Elsevier BV
Date: 03-2023
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 2023
Publisher: Frontiers Media SA
Date: 13-02-2023
DOI: 10.3389/FENVS.2023.1112689
Abstract: Upgrading toilets in rural areas is an effective way to protect public health and reduce environmental pollution. Although there are studies on rural toilets, the sustainable performance of rural toilets in developing areas is considerably less understood. The study aims to build a sustainability assessment model of rural toilet technology to support the local government in upgrading rural toilets. The unascertained measure theory is integrated into the model to quantify the sustainability performance of rural toilet technology in three dimensions: economy, service and management, and environment. A case study of Honghai Village, Inner Mongolia, China, is conducted to verify the reliability of the sustainability assessment model. The results indicate that the sustainability performance of the three-compartment septic tank toilet technology is good in Honghai Village. The results are consistent with the situation of the three-compartment septic tank toilets in the village, which verifies the model’s validity. This study can help local government significantly upgrade rural toilets and improve the living standards of rural residents.
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 03-2022
Publisher: Springer Science and Business Media LLC
Date: 16-08-2019
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 11-2021
Publisher: MDPI AG
Date: 08-03-2019
DOI: 10.3390/SU11051446
Abstract: The implementation of the Beijing, Tianjin, and Hebei coordinated development strategy has seriously increased the influence of land use and urban traffic. Thus, understanding the coordination between urban land and transportation systems is important for the efficient and sustainable development of cities, especially in this rapidly urbanizing era. Urban–industrial land and highway networks are, respectively, primary types of urban land and transportation systems, and have significant impacts on social and economic development. However, limited studies have been conducted to examine the relationships between urban–industrial land and highway networks. Therefore, this paper aims to examine the coupling coordination relationship between urban–industrial land use efficiency, and the accessibility of the highway networks of cities. Specifically, in the context of the Beijing–Tianjin–Hebei (BTH) urban agglomeration, the coupling coordination between urban-industrial land use efficiency and accessibility of the highway traffic network was empirically analyzed. The results show that: (i) The differences in urban-industrial land use efficiency in the BTH region are significant. Capital cities in the BTH urban agglomeration have higher economic, social, and comprehensive efficiency, while in industrial cities, the use of urban–industrial land should prioritize ecological and environmental issues. (ii) Because of its good geographical location Beijing has the best accessibility, with an accessibility index of 1.416, while Qinhuangdao had the lowest accessibility index of 0.039. (iii) In most BTH cities, the urban-industrial comprehensive land use level has fallen behind the highway network development level. The results of this study can provide references for the coordinated development of the BTH urban agglomeration.
Publisher: Elsevier BV
Date: 11-2015
Publisher: MDPI AG
Date: 29-03-2023
DOI: 10.3390/SU15075939
Abstract: Traffic accidents have become severe risks as they are one of the causes of enormous deaths worldwide. Reducing the number of incidents is critical to saving lives and achieving sustainable cities and communities. Machine learning and data analysis techniques interpret the reasons for car accidents and propose solutions to minimize them. However, this needs to take the benefits of big data solutions as the size and velocity of traffic accident data are increasingly large and rapid. This paper explores road car accident data patterns and proposes a predictive model by investigating meaningful data features, such as accident severity, the number of casualties, and the number of vehicles. Therefore, a pre-processing model is designed to convert raw data using missing and meaningless feature removal, data attribute generalization, and outlier removal using interquartile. Four classification methods, including decision trees, random forest, multinomial logistic regression, and naïve Bayes, are used and evaluated to study the performance of road accident prediction. The results address acceptable levels of accuracy for car accident prediction except for naïve Bayes. The findings are discussed through a data-driven approach to understand the factors influencing road car accidents and highlight the key ones to propose accident prevention solutions. Finally, some strategies are provided to achieve healthy and community-friendly cities.
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 07-2023
Publisher: De Gruyter
Date: 21-08-2017
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 07-2022
Publisher: MDPI AG
Date: 29-11-2018
DOI: 10.3390/SU10124509
Abstract: The reservoir-related tourism industry has been developed for leisure purposes since the 1970s and has gained popularity worldwide. To promote reservoir-related tourism in China, the Chinese government launched a “top-down” project titled “Water Conservation Scenic Spot” (WCSS) in 2001. However, because of the lack of reasonable planning, innovative ideas, and effective governance, there are some problems with WCSS constraining its development. To deal with those problems, it is necessary to have a holistic understanding of the WCSS situation. This study analyses the origin, status, opportunities, and challenges of WCSS development in China. The results show a trend of periodic increase in the number of WCSSs between 2001 and 2016, and WCSS development is unbalanced regarding regions and types. Moreover, the main issues for the WCSS include the failure to follow WCSS guidelines in practice, weak awareness of the scientific educational function, monotonous planning and construction, a lack of cultural preservation, insufficient funding, weak marketing, damaging of natural resources, destruction of clusters of animals and plants, land surface erosion, and landscape pollution. These adverse effects can be alleviated by strengthening supervision and fostering balanced development, promoting education and protecting cultural resources, distributing funding and enlarging popularity, controlling the amount of tourism, and avoiding overexpansion. Overall, the findings of this study can encourage the development of WCSSs in the future and are of significance in supporting the reservoir-related tourism industry.
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 09-2023
Publisher: Frontiers Media SA
Date: 22-06-2022
Abstract: While there have been various studies on global vegetation dynamics, limited studies have been conducted to understand vegetation changes in arid areas. Vegetation distribution patterns can be affected by multiple factors, so understanding their interactions can help improve the capability of predicting future vegetation dynamics. This study, therefore, analyzed the dynamic vegetation changes in Alxa League, China, using the Normalized Difference Vegetation Index (NDVI) dataset (2000–2019), with the consideration of land cover types, digital elevation model, air temperature, precipitation, soil moisture, total evaporation, and air quality. The results show that the NDVI in Alxa League is small. Before 2012, the NDVI value fluctuated, while after 2012, the NDVI value dropped sharply and then slowly recovered after 2015. High NDVI values were found in areas with high and frequent human activities (city centers). The NDVI in the northwest region showed a slight degradation trend, and the southeast showed a slight improvement trend. According to the land cover type analysis, the NDVI value was the largest when the land cover type was tree cover, and the NDVI value was the smallest when the land cover type was bare/sparse vegetation. Alxa League was dominated by a bare/sparse vegetation distribution. The terrain analysis indicates that when the height was between 1800 and 3492 m, the NDVI value was the highest, and high NDVI values were mainly distributed in the area with a slope & 25°. When the slope was flat, the NDVI value was the smallest. Considering climate factors, the NDVI was negatively correlated with air temperature, precipitation, soil moisture, and total evaporation in space, and only precipitation and soil moisture were positively correlated in time. Moreover, the population size has a strong positive correlation with the NDVI in this area. The monthly variation of the NDVI and absorbable particulate matter (PM 10 ) was negatively correlated, i.e., strongly negatively correlated in spring, summer, and autumn, but only weakly positively correlated in winter. The seasonal variation of the NDVI was as follows: summer & autumn & spring & winter, and the seasonal variation of PM 10 was spring & winter & summer & autumn. The interannual variation of the NDVI and PM 10 was positively correlated. This suggests that the absorbable particulate matter (PM 10 ) may be an essential factor for the normalized vegetation index to underestimate the dynamic changes of vegetation in arid regions. This study provides a theoretical basis for the dynamic changes of vegetation in the dry Alxa League.
Publisher: MDPI AG
Date: 16-11-2021
DOI: 10.3390/APP112210810
Abstract: Porous asphalt pavement (PAP) system is a widely used treatment measure in sustainable stormwater management and groundwater recharge, but their variable performance in nitrogen (N) and phosphorus (P) removal requires further reinforcement prior to widespread uptake. Two laboratory-scale PAP systems were developed by comparing limestone bedding and zeolite incorporated into modified zeolite powder porous microsphere (MZP-PM) as a filter column under a typical rainfall. The PAP system of zeolite bedding incorporated into MZP-PM (a weight less than 5% of zeolite) removed 74.5% to 90.6% of ammonium (NH4+-N) and 72.9% to 92.4% of total phosphate (TP) from the influent, as compared with 25.7% to 62.7% of NH4+-N and 32.6% to 56.4% of TP by that of the limestone as bed material. This improvement was presumably due to MZP-PM’s high adsorption capacity and surface complexation. The formation of ≡(La)(OH)PO2 was verified to be the dominant pathway for selective phosphate adsorption by MZP-PM and ion-exchange was proved to be the main removal process for ammonium. This study provides promising results for improving N and P removal by modifying a porous asphalt pavement system to include an MZP-PM adsorbent column as a post-treatment.
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 08-2023
Publisher: Elsevier BV
Date: 02-2014
Publisher: Elsevier BV
Date: 02-2014
DOI: 10.1016/J.SCITOTENV.2013.11.118
Abstract: Nowadays people are excessively depending on air conditioning to create a comfortable indoor environment, but it could cause some health problems in a long run. In this paper, wind velocity field, temperature field and air age field in a bedroom with wall-hanging air conditioning running in summer are analyzed by CFD numerical simulation technology. The results show that wall-hanging air conditioning system can undertake indoor heat load and conduct good indoor thermal comfort. In terms of wind velocity, air speed in activity area where people sit and stand is moderate, most of which cannot feel wind flow and meet the summer indoor wind comfort requirement. However, for air quality, there are local areas without ventilation and toxic gases not discharged in time. Therefore it is necessary to take effective measures to improve air quality. Compared with the traditional measurement method, CFD software has many advantages in simulating indoor environment, so it is hopeful for humans to create a more comfortable, healthy living environment by CFD in the future.
Publisher: MDPI AG
Date: 06-03-2019
DOI: 10.3390/SU11051392
Abstract: Cultural heritage tourism (CHT) has become an important part of the tourism industry. Therefore, it is essential to evaluate the sustainability of CHT destinations for tourism development. The majority of existing studies have examined the destination sustainability of ecotourism with the considerations of three stakeholder groups, namely, resource administration, tourist, and local community. However, the impact of tourism enterprises on destination sustainability has been constantly ignored in CHT-related studies. To fill these gaps, this study aims at developing an indicator system for comprehensively assessing the sustainability of CHT destinations. Specifically, this study identified an evaluation indicator system based on the Delphi technique and applied it to the context of Pingyao Ancient City in China. Results demonstrated that scores obtained by all four stakeholder groups ranged between 3.0 and 4.0 and the overall sustainability score was only 63.94, indicating that Pingyao was in the “somewhat sustainable” state according to the criteria (0−25, unsustainable 25−50, somewhat unsustainable 50−75, somewhat sustainable 75−100, sustainable) specified in previous studies. A more balanced outcome should be achieved where each stakeholder’s interests are fully considered, but not at the expense of the others. The findings are of great significance for heritage tourism literature and sustainable destination management.
Publisher: Springer Science and Business Media LLC
Date: 24-07-2023
Publisher: MDPI AG
Date: 30-04-2020
DOI: 10.3390/APP10093148
Abstract: Bioretention has great potential in managing and purifying urban stormwater runoff. However, information regarding the removal of nutrients in bioretention systems with the use of media, plants, and saturated areas is still limited. In this study, three devices of control, conventional bioretention (DS), and strengthened bioretention (SZ) were investigated to enhance the simultaneous removal of nitrogen and phosphorus. The experimental column SZ showed the best performance for total phosphorus (TP), ammonia (NH4+-N) and total nitrogen (TN) removal (85.6–92.4%, 83.1–92.7%, 57.1–74.1%, respectively), whereas DS columns performed poorly for NH4+-N removal (43.6–81.2%) under different conditions. For the removal of nitrate, the columns of Control and DS exhibited negative performance (−14.3% and −8.2%) in a typical event. Further evaluation of water quality revealed that in the early stages of rainfall, the effluent of the SZ column was able to reach quality standards of Grade IV for surface water in China. Moreover, although the ion-exchange and phosphate precipitation occurred on the surface of the media, which were placed in the saturation zone, it did not change the surface crystal structure.
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 11-2017
Publisher: Springer International Publishing
Date: 2023
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 08-2014
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 08-2018
Publisher: Wiley
Date: 23-07-2021
Abstract: Whilst many cities have implemented strategies for urban park supply, the expected outcome may be productively poor, aggravating the inequality. However, little evidence of reducing urban park inequality through regulating urban park scale has been presented. The indicators of accessibility per capita park area, Gini coefficient, and accessible park share are adopted to assess the urban park inequality in Chongqing and examine park scale impacts, through 21 incremental scenarios. Whilst the overall urban park equity is relatively reasonable in Chongqing's core area, the park accessibility is markedly unequal in distribution. There is no significant difference between the age‐ and income‐vulnerable groups and all residents in urban park equity. However, a highly unequal distribution of comprehensive parks, neighborhood parks, and small pleasance for all residents and vulnerable groups is observed. Moreover, urban park equity can be affected by park scale, where urban park number has a positive impact on accessible per capita park area and a negative effect on Gini coefficient, among all residents and vulnerable groups. There is no significant relationship between park number and the proportion of accessible park share of vulnerable groups. Overall, the impact of park scale is revealed on park‐related equity and policy makers and planners are suggested for public health, environmental equity in urban communities.
Publisher: Elsevier BV
Date: 11-2022
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 08-2022
DOI: 10.1016/J.WATRES.2022.118755
Abstract: Pervious pavement system (PPS) is a suitable alternative technique for mitigating urban flooding and urban heat island (UHI) simultaneously. However, existing literature has revealed that PPSs cannot achieve the expected permeability and evaporation. To overcome this gap, this study presents an elaborate review of problems associated with PPSs and highlights its benefits to stormwater management and UHI mitigation. We determined key parameters of PPSs that could influence urban flooding and UHI mitigation, including hydrological properties, thermal physical properties, structure design, and clogging resistance. We identified the co-benefits approach of PPS towards performance synergism on stormwater management and UHI mitigation from quality controlled design and fabrication, periodic maintenance, and effective evaluation system based on practice environments. The results indicate that existing studies of PPSs primarily focus on permeability, while little emphasis is given to the evaporative cooling performance, leading to a biased development with a loss of test standards and regulations that cannot control the cooling potential of the system. The performance synergism of permeability and evaporative cooling in PPS should be studied further, while considering quality control of the materials and in-situ practice design. Parameter controls (with commonly used standards) during fabrication, periodic maintenance (during operation), and pre- and post-evaluation processes of PPSs should work collectively to achieve optimal benefits and reduced costs.
Publisher: MDPI AG
Date: 06-10-2023
Publisher: Elsevier BV
Date: 02-2021
Publisher: Springer Nature Singapore
Date: 2022
Publisher: MDPI AG
Date: 28-10-2021
DOI: 10.3390/RS13214338
Abstract: This study investigated monthly variations of surface urban heat island intensity (SUHII) and the applicability of the local climate zones (LCZ) scheme for land surface temperature (LST) differentiation within three spatial contexts, including urban, rural and their combination, in Shenyang, China, a city with a monsoon-influenced humid continental climate. The monthly SUHII and LST of Shenyang were obtained through 12 LST images, with one in each month (within the period between 2018 and 2020), retrieved from the Thermal InfraRed Sensor (TIRS) 10 in Landsat 8 based on a split window algorithm. Non-parametric analysis of Kruskal-Wallis H test and a multiple pairwise comparison were adopted to investigate the monthly LST differentiations with LCZs. Overall, the SUHII and the applicability of the LCZ scheme exhibited spatiotemporal variations. July and August were the two months when Shenyang underwent strong heat island effects. Shenyang underwent a longer period of cool than heat island effects, occurring from November to May. June and October were the transition months of cool–heat and heat–cool island phenomena, respectively. The SUHII analysis was dependent on the definition of urban and rural boundaries, where a smaller rural buffering zone resulted in a weaker SUHI or surface urban cool island (SUCI) phenomenon and a larger urban area corresponded to a weaker SUHI or SUCI phenomenon as well. The LST of LCZs did not follow a fixed order, where in July and August, the LCZ-10 (Heavy industry) had the highest mean LST, followed by LCZ-2 (Compact midrise) and then LCZ-7 (Lightweight low-rise). In comparison, LCZ-7, LCZ-8 (Large low-rise) and LCZ-9 (Sparsely built) had the highest LST from October to May. The LST of LCZs varied with urban and rural contexts, where LCZ-7, LCZ-8 and LCZ -10 were the three built LCZs that had the highest LST within urban context, while LCZ-2, LCZ-3 (Compact low-rise), LCZ-8, LCZ-9 and LCZ-10 were the five built LCZs that had the highest LST within rural context. The suitability of the LCZ scheme for temperature differentiation varied with the month, where from July to October, the LCZ scheme had the strongest capability and in May, it had the weakest capability. Urban context also made a difference to the suitability, where compared with the whole study area (the combination of urban and rural areas), the suitability of built LCZs in either urban or rural contexts weakened. Moreover, the built LCZs had a higher level of suitability in an urban context compared with a rural context, while the land-cover LCZs within rural had a higher level of suitability.
Publisher: Elsevier BV
Date: 11-2018
Publisher: Springer International Publishing
Date: 31-07-2020
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 12-2022
Publisher: MDPI AG
Date: 26-09-2023
DOI: 10.3390/RS15194704
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Elsevier BV
Date: 09-2022
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Wiley
Date: 15-01-2022
Abstract: United Nations Sustainable Development Goals (SDGs) 9 and 11 advocate industrial innovation and sustainable cities, respectively, although how sustainable urban development ensures the protection of innovative achievements remains understudied. Employing the Spatial Durbin Model, this study examines how the protection of intellectual property rights (IPRs) has affected sustainable urbanization using the case of the Huaihai economic zone (HEZ), China. Adopting a theoretical and empirical approach, the study seeks to understand how sustainable urbanization affects the protection of IPRs, and explores the spatial spillover from the perspectives of economic growth structure, technological progress, economic agglomeration and social welfare enhancement, taking into account also the protection of IPRs at a sub‐national level. The results indicate that sustainable urbanization is positively related to the protection of IPRs (as can be understood from the four abovementioned aspects of sustainable urbanization), that the spatial spillover effects of sustainable urbanization on the protection of IPRs and distance from the central city are significant, and that foreign direct investment (FDI)—a significant driving force in China's urbanization—has a negative impact.
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Elsevier BV
Date: 03-2019
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Springer Science and Business Media LLC
Date: 13-07-2022
DOI: 10.1007/S11356-022-21839-X
Abstract: Urban heat challenges are increasingly severe, along with climate change and urbanisation. Despite significant environmental, economic, and social consequences, limited actions have been conducted to address urban heat challenges. To support the formulation of heat-health plans and guidelines at the city and community scale, this study presented results, through a questionnaire survey among 584 respondents in Shanghai, China, on heat-induced physiological and psychological impacts and analysed the variability of them with demographic characteristics. The results indicate that psychological impacts were more severe than physiological impacts in severity and susceptible people. Skin heat damage and digestive system diseases were ignored in previous studies, compared with fatal cardiovascular and respiratory diseases. Emotional irritability and difficulty in controlling temper were the two most prominent psychological symptoms. The elderly and health-vulnerable groups were more susceptible to heat-induced physiological and psychological impacts than other groups. Among different demographic groups, the most critical physiological and psychological symptoms could vary significantly. Afterwards, suggestions for heat-health plans or guidelines have been proposed. Overall, this study provides a reference for the understanding of heat-induced impacts and enhancing the capacity to cope with urban heat challenges.
Publisher: Springer Science and Business Media LLC
Date: 12-10-2018
Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier BV
Date: 11-2014
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.SCITOTENV.2019.134742
Abstract: Fungal spore resuspension on the surfaces of the heating, ventilation and air-conditioning (HVAC) ducts have been verified as one of the most important factors causing indoor biological pollution. To effectively control indoor bioaerosols pollution, it is essential to understand the resuspension characteristics of fungal spores in HVAC ducts. Therefore, this study aims to investigate the movement behavior of particles and further the variation of particle resuspension with HVAC operation mode. Based on the experimental and numerical study, this study specifically investigated the micro-movement behavior of particles and impact of particle size (1, 4, 7 and 10 μm), air temperature (9, 15 and 30 °C), relative humidity (20, 50 and 80%), duct surface roughness (0.5 and 50 μm) and air velocity (0.3, 0.9, 1.5 and 2.5 m/s) on the short-term resuspension of particle in horizontal HVAC ducts. Results indicate that spore particles were dominantly rolling off rather than sliding or being lifted into the air. Compared with larger particles, smaller ones were more sensitive to the wall roughness. The resuspension rate of spores was mainly affected by airflow velocity and particle size, where the resuspension rate of particles increased by up to six times with the increase of airflow velocity from 0.9 to 2.5 m/s. In comparison, either air temperature or relative humidity made negligible difference to particle resuspension rate. Overall, this study provides the knowledge of fungal spore resuspension in HVAC ducts, laying the foundation for effectively controlling the indoor biological pollution.
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 06-2017
Publisher: MDPI AG
Date: 20-12-2021
DOI: 10.3390/LAND10121406
Abstract: Poverty is a challenge worldwide. Policy and regulations guiding anti-poverty measures for governments, NGOs, and multilateral institutions have not considered the spatial scale effect of regional poverty, resulting in low-efficiency poverty alleviation actions. This study addressed research gaps by analyzing the multi-scale (county, township, and village) features of regional poverty in Yanbian Korean Autonomous Prefecture in Jilin province, China. It examined the impact of geographic capital and associated spatial heterogeneity from four dimensions: natural environment, transport location, facilities accessibility, and socioeconomic development. The results identified that regional poverty varied at different scales: lower-scale poverty had higher levels of spatial differences, agglomeration, and spatial autocorrelation than higher-scale poverty, and the “island effect” was prominent. The factors potentially impacting regional poverty varied at different scales for geographical capital. At the township scale, only transport location and socioeconomic development dimensions could make significant differences. Factors in all four dimensions could affect village-scale poverty significantly, and the natural environment dimension was more effective than the other three dimensions. The impact of geographic capital and its spatial heterogeneity at the village scale varied, implying that local and erse anti-poverty measures should increase. This study improves understanding of the multi-scale features of regional poverty and supports the formulation of effective anti-poverty measures.
Publisher: MDPI AG
Date: 03-2019
Abstract: The ecological status of the semi-arid steppes in China is fragile. Under the long-term and high-intensity development of mining, the ecological integrity and bio ersity of steppe landscapes have been destroyed, causing soil pollution, grassland degradation, landscape function defect, and so on. Previous studies have mainly focused on ecosystem health assessment in mining areas. Landscape ecological health (LEH) pays more attention to the interactions between different ecosystems. Therefore, the ecological assessment of mining cities is more suitable on a landscape scale. Meanwhile, the existing LEH assessment index systems are not applicable in ecologically fragile areas with sparse population, underdeveloped economy, and in relatively small research areas. The purpose of this study was to construct a LEH assessment index system and evaluate the LEH of a mining city located in a semi-arid steppe. Xilinhot is a typical semi-arid steppe mining city in China. The contradictions between the human, land and ecological environment are serious. A new model Condition, Vigor, Organization, Resilience, and Ecosystem (CVORE) model was constructed that integrated five subsystems (services) from the perspectives of ecology, landscape ecology, mining science, and geography. This study used the CVORE model to systematically evaluate the LEH in Xilinhot city in terms of five LEH levels, including very healthy, healthy, sub-healthy, unhealthy and morbid landscape. Research results show that the areas of the very healthy, healthy, sub-healthy, unhealthy and morbid landscapes are 13.23, 736.35, 184.5, 66.76 and 20.63 km2, respectively. The healthy landscapes area accounts for 72.08% and most grasslands are healthy. The sub-healthy landscapes are mainly located around areas with higher disturbances due to human activities. The morbid or unhealthy landscapes are concentrated in the mining areas. The proposed CVORE model can enrich the foundations for the quantitative assessment of Landscape Ecological Health of Mining Cities in Semi-arid Steppe (LEHMCSS). This study provided a new LEH assessment approach (CVORE model), which can support landscape ecological restoration, ecological environmental protection and urban planning of the semi-arid steppe mining cities.
Publisher: Elsevier BV
Date: 07-2021
Publisher: Informa UK Limited
Date: 2017
Publisher: Elsevier BV
Date: 04-2022
Publisher: MDPI AG
Date: 15-08-2018
DOI: 10.3390/SU10082890
Abstract: Universities spend billions of dollars on green buildings as a sustainability commitment. This research investigates occupant satisfaction with indoor environmental quality (IEQ), building design (BD), and facilities management (FM) in five highly ranked green higher educational buildings in the subtropical climate of Australia, in comparison to nine non-green counterparts. The results disclose that the green building users were more consistently satisfied than the non-green building users with BD& FM elements, such as design, needs from facilities, building image, cleaning, the availability of meeting rooms, and storage. On the other hand, the study revealed weaknesses of green buildings in IEQ, such as noise, ventilation, and artificial lighting. The in idual environmental control positively correlated with satisfaction in non-green buildings, but did not significantly affect satisfaction in green buildings. This study also identified the influences of non-environmental factors on occupant satisfaction, such as gender, age, sitting close to a window, hours spent in the building and in the workstation, and the number of people sharing office space. The research provides evidence and guidance for investing in, designing, and managing green educational facilities.
Publisher: Elsevier BV
Date: 06-2022
Publisher: Hindawi Limited
Date: 20-01-2019
DOI: 10.1155/2019/2739212
Abstract: For offshore bridges, the most prominent problem in the whole life cycle is that it is in an earthquake prone zone and an offshore corrosion environment at the same time. A nonlinear dynamic analysis model is set up for an offshore multispan and continuous rigid frame bridge based on the OpenSEES platform. The fragility surface of the bridge pier, bearing, bridge platform, and system are established by selecting a reasonable damage constitutive model of the material durability and a damage index analysis that studies the damage of the bridge durability to time-varying seismic fragility of bridge components and the system of the whole life cycle in offshore environment. The results show that the durability damage will lead to a constant decline in seismic capacity of the pier and an increase of the seismic demand under earthquake action as well as the probability to reach the ultimate failure state compared to high piers, a low pier is more vulnerable to the offshore corrosion environment the seismic fragility of bridge platform is higher than that of simply bearing and the influence of offshore corrosion on environment is relatively large. With the prolongation of service period, the effect of durability damage on the seismic fragility of bridge system cannot be ignored in the coastal environment and it is necessary to make a reasonable evaluation on the seismic fragility of bridge structure during the whole life period.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 06-2014
Publisher: Elsevier BV
Date: 02-2014
Publisher: Elsevier BV
Date: 11-2017
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 06-2018
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 02-2014
Publisher: Elsevier BV
Date: 10-2015
Publisher: IWA Publishing
Date: 13-07-2023
DOI: 10.2166/WCC.2023.006
Abstract: Permeable pavement is a widely used stormwater runoff blocking technology in sponge city construction. Its application to urban motorized/non-motorized roads is expected to reduce runoff and pollution loads. This study aimed to analyze the nutrient pollution, thermal pollution reduction efficiency and removal pathways of cement permeable bricks (CP-B-Cement), steel slag permeable bricks (SP-B), ceramic permeable bricks (CP-B-Ceramic) and permeable asphalt pavement (PAP) under different pollution loads and rainfall intensities by simulating the different stormwater runoffs. Results indicated that the effluent concentration of different permeable pavements increased with the extension of rainfall duration. Compared with impermeable pavements, the infiltration and water storage capacities of permeable pavements could effectively remove typical pollutants from stormwater runoff. However, the effluent concentrations of all pollutants did not reach the threshold of Class V according to the Environmental Quality Standards for Surface Water except for TP and Zn. Meanwhile, the thermal pollution removal capacity of the permeable pavements ranking from the highest to the lowest was SP-B & CP-B-Cement & CP-B-Ceramic & PAP. The findings in this study provide references for the selection of stormwater source reduction facilities and the development of surface source pollution countermeasures.
Publisher: Elsevier BV
Date: 12-2018
Publisher: Springer Nature Singapore
Date: 2022
Publisher: Elsevier BV
Date: 04-2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2022
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 07-2023
Publisher: Frontiers Media SA
Date: 06-12-2021
DOI: 10.3389/FPUBH.2021.774553
Abstract: The workload in the Infection Disease Nursing Unit (IDNU) is increasing dramatically due to COVID-19, and leads to the prevalence of fatigue among the frontline nurses, threatening their health, and safety. The built environment and design could fundamentally affect the fatigue of nurses for a long-term perspective. This article aims to extract the environmental factors of IDNU and explore nurses' perceptions of these factors on the work-related fatigue. It would produce evidences for mitigating the fatigue by environmental interferons. A cross-sectional design was employed by combination of focus group interview and written survey. Environmental factors of IDNU were collected from healthcare design experts ( n = 8). Nurses ( n = 64) with frontline COVID-19 experiences in IDNU were recruited to assess these factors in idually. Four environmental factors were identified as: Nursing Distance (ND), Spatial Crowdness (SC), Natural Ventilation, and Light (NVL), and Spatial Privacy (SP). Among them, ND was considered as the most influential factor on the physical fatigue, while SP was on the psychological fatigue. Generally, these environmental factors were found to be more influential on the physical fatigue than the psychological fatigue. Technical titles were found to be associated with the nurses' perceptions of fatigue by these environmental factors. Nurse assistant and practical nurse were more likely to suffer from the physical fatigue by these factors than senior nurse. The result indicated that environmental factors of IDNU were associated with the nurses' fatigue, particularly on the physical aspect. Environmental interventions of design could be adopted to alleviate the fatigue by these factors such as reducing the ND and improving the spatial privacy. The accurate interventional measures should be applied to fit nurses' conditions due to their technical titles. More attention should be given to the low-ranking nurses, who account for the majority and are much vulnerable to the physical fatigue by environmental factors.
Publisher: Springer Science and Business Media LLC
Date: 09-02-2023
DOI: 10.1057/S41599-023-01551-Y
Abstract: Pseudo-human settlements (PHS) reflect the subjective wishes and needs of residents. An in-depth characterization of PHS aids in clarifying the actual development needs and future development directions of the city from the residents’ perspective. China is currently undergoing high-speed urbanization and advocates improving the quality of cities. It is particularly important to test the achievements of urbanization through PHS. This study quantitatively analyses spatiotemporal characteristics and the realistic driving mechanism of PHS in 286 Chinese cities through spatial autocorrelation analysis and geographic detectors. The results indicate that (1) the PHS level exhibited notable hierarchical characteristics and spatial differences (high in the eastern coastal regions and low in the western inland regions), with weak positive autocorrelation characteristics (2) nighttime light index, per capital GRP, and population size are major drivers of heterogeneity of development level and functional structure of PHS and (3) the functional structure followed an emergence-development-maturity-decline-extinction life cycle. Overall, the development of PHS must play a leading role in high-level areas, and urban decision-makers should clarify and adapt to local preferences of PHS and predict future changes. The findings of this study can help China and other countries promote realistic development by unveiling the characteristics of PHS.
Publisher: Elsevier BV
Date: 03-2023
Publisher: Elsevier BV
Date: 03-2021
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 2023
Publisher: MDPI AG
Date: 09-01-2019
Abstract: Growing and densifying cities set a challenge for preserving and enhancing green spaces to cool urban spaces. Green roofs, involving the planting of vegetation on rooftops, are regarded as an alternative approach to enhancing urban greenery and urban cooling. For better cooling performances, it is essential to reasonably configure green roofs, especially in real and complex neighborhoods. Therefore, the aim of this paper is to investigate the impact of morphological characteristics of green roofs on pedestrian cooling in real and complex neighborhoods. In specific, based on an ENVI-met model, we studied the effect of greening layout, coverage ratio, vegetation height, and building height on pedestrian air temperature reduction in the tropical city of Hangzhou, China. Results indicate green roofs could generate moderate effects on pedestrian air temperature reduction (around 0.10–0.30 °C), while achieving a cooling performance of 0.82 °C. Green roofs in upwind zones were able to generate the most favorable cooling performance, while green roofs in downwind zones made slight differences to pedestrian thermal environments. Green roofs with a low coverage ratio were not useful for lowering pedestrian temperature, and a greening coverage ratio of 25–75% in upwind zones was cost-effective in real neighborhoods. Locations that were horizontally close to green roofs enjoyed better cooling performances. Increasing vegetation height could strengthen cooling effects of green roofs, while an increase in building height weakened the cooling performance. Nevertheless, higher building height could enhance pedestrian cooling performances because of building shading effects. In addition, because of wind effects and building shading, building height limits for the cooling performance of green roofs could be higher than 60 m.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 07-2020
No related grants have been discovered for Bao-Jie He.