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Weizhong Su
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

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Journal article
Published: 26 June 2019 in Sustainability
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Habitat quality (HQ) is of great significance to regional sustainable development, which is a key link for regional ecological security and human welfare. Assessing the temporal and spatial evolution of HQ caused by land-use change could provide a scientific basis for regional ecological protection and land management. Here, based on the ArcGIS platform and the InVEST model, this study quantified the spatial and temporal evolutions of land use, landscape patterns, and HQ from 1985 to 2015, in Taihu Lake Basin (TLB). Hotspot analysis tools were used to identify the spatial agglomeration and evolution characteristics of HQ in TLB. The results showed that, (1) the land use and landscape pattern in TLB experienced dramatic change process during 1985–2015, with the dominating conversion being from farmland to construction land, which led to an increase in landscape heterogeneity and fragmentation. (2) The HQ was generally reduced in the past 30 years. In particular, the decline of HQ was extremely severe in the peripheral area of cities and roads, due to urban sprawl. (3) Regarding the spatial distribution of HQ, the northern and eastern areas were generally higher, while the western and southern areas were generally lower. The hotspots areas were mainly located in the southwestern mountain area and west-central lake area, while the cold spots areas were mainly located in urban areas in the north and the east. (4) The area and degree of habitat degradation were both increased significantly due to land-use change, and the degradation of the Taihu Lake was highlighted. Strengthening the ecological environment management and reducing the threat of urban expansion to the HQ is urgently required. This study could help understand HQ of the TLB and provide a scientific basis for decision-makers.

ACS Style

Liting Xu; Sophia Chen; Yu Xu; Guangyu Li; Weizhong Su. Impacts of Land-Use Change on Habitat Quality during 1985–2015 in the Taihu Lake Basin. Sustainability 2019, 11, 3513 .

AMA Style

Liting Xu, Sophia Chen, Yu Xu, Guangyu Li, Weizhong Su. Impacts of Land-Use Change on Habitat Quality during 1985–2015 in the Taihu Lake Basin. Sustainability. 2019; 11 (13):3513.

Chicago/Turabian Style

Liting Xu; Sophia Chen; Yu Xu; Guangyu Li; Weizhong Su. 2019. "Impacts of Land-Use Change on Habitat Quality during 1985–2015 in the Taihu Lake Basin." Sustainability 11, no. 13: 3513.

Journal article
Published: 28 December 2017 in Sustainability
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Residential thermal environment affects the life of residents in terms of their physical and mental health. Many studies have shown that building design elements affect the urban thermal environment. In this study, Nanjing City was used as the study area. A three-dimensional microclimate model was used to simulate and analyze the effects of four main factors, namely, building height, density, layout and green ratio, on thermal environment in residential areas. Results showed that 25% building density obtained a low average air temperature (ATa) and average predicted mean vote (APMV) during 24 h. Thus, a higher building height indicates a lower ATa and APMV and better outdoor comfort level. In addition, peripheral layout had the lowest ATa and APMV, followed by the determinant and point group layouts. The green ratio increased from 0% to 50% with a 10% step and the ATa and APMV decreased gradually. However, when the green ratio increased from 30% to 40%, ATa and APMV decreased most. The effects of building height, density and green ratio on the thermal environment in residential areas were interactive. The effects of building density, green ratio and layout on hourly air temperature and hourly predicted mean vote in daytime varied from these indicators during night time. How the four building design elements interact with thermal environment were probed from two aspects of air temperature and thermal comfort based on the validated ENVI-met, which is the element of novelty in this study. However, thermal comfort has rarely been considered in the past studies about urban outdoor thermal environment.

ACS Style

Yingbao Yang; Xize Zhang; Xi Lu; Jia Hu; Xin Pan; Qin Zhu; Weizhong Su. Effects of Building Design Elements on Residential Thermal Environment. Sustainability 2017, 10, 57 .

AMA Style

Yingbao Yang, Xize Zhang, Xi Lu, Jia Hu, Xin Pan, Qin Zhu, Weizhong Su. Effects of Building Design Elements on Residential Thermal Environment. Sustainability. 2017; 10 (2):57.

Chicago/Turabian Style

Yingbao Yang; Xize Zhang; Xi Lu; Jia Hu; Xin Pan; Qin Zhu; Weizhong Su. 2017. "Effects of Building Design Elements on Residential Thermal Environment." Sustainability 10, no. 2: 57.

Article
Published: 01 April 2017 in Chinese Geographical Science
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Concerns regarding urbanization impacts on floods gradually moved from end-of-pipe solutions, based on open channel hydraulics improvement, to imperviousness ratio limiting and then to land use control and to integrated planning at local and large scale levels. The Niushou River basin is one of the fastest urbanizing areas in Nanjing City, East China, however, the high urban land percentage has leaded to series of flooding events. The paper aims to reveal the impact of imperviousness ratio, patterns and drainage system on flooding areas based on the unit of catchment and Storm Water Management Model (SWMM). The following conclusions were reached. 1) The ratio or spatial characteristics of the impervious surface affected the runoff volumes and associated floods areas. Despite the well-established drainage system, the high imperviousness ratio, particularly clustered pattern in locations such as hydrological sensitive zones aggravated the flooding tension across the basin. 2) The poor drainage hydraulic efficiency in local areas, and the lack of integral processes of infiltration, yield, storage and discharge in local catchment and larger basin are also significant factors. 3) The Niushou River basin development should improve the drainage transformations from a single local, short-term drainage process into integral, elastic processes of infiltration, yield, storage, and discharge.

ACS Style

Weizhong Su; Hongtao Duan. Catchment-based imperviousness metrics impacts on floods in Niushou River basin, Nanjing City, East China. Chinese Geographical Science 2017, 27, 229 -238.

AMA Style

Weizhong Su, Hongtao Duan. Catchment-based imperviousness metrics impacts on floods in Niushou River basin, Nanjing City, East China. Chinese Geographical Science. 2017; 27 (2):229-238.

Chicago/Turabian Style

Weizhong Su; Hongtao Duan. 2017. "Catchment-based imperviousness metrics impacts on floods in Niushou River basin, Nanjing City, East China." Chinese Geographical Science 27, no. 2: 229-238.

Research article
Published: 24 March 2017 in Frontiers of Earth Science
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There is growing interest in using the urban landscape for stormwater management studies, where land patterns and processes can be important controls for the sustainability of urban development and planning. This paper proposes an original index of Major Hazard Oriented Level (MHOL) and investigates the structure distribution, driving factors, and controlling suggestions of urban-rural land growth in flood-prone areas in the Taihu Lake watershed, China. The MHOL of incremental urban-rural land increased from M 31.51 during the years 1985–1995 to M 38.37 during the years 1995–2010 (M for medium structure distribution, and the number for high-hazard value). The index shows that urban-rural land was distributed uniformly in flood hazard levels and tended to move rapidly to high-hazard areas, where 72.68% of incremental urban-rural land was aggregated maximally in new urban districts along the Huning traffic line and the Yangtze River. Thus, the current accelerating growth of new urban districts could account for the ampliative exposure to high-hazard areas. New districts are driven by the powerful link between land financial benefits and political achievements for local governments and the past unsustainable process of “single objective” oriented planning. The correlation categorical analysis of the current development intensity and carrying capacity of hydrological ecosystems for sub-basins was used to determine four types of development areas and provide decision makers with indications on the future watershed-scale subdivision of Major Function Oriented Zoning implemented by the Chinese government.

ACS Style

Weizhong Su. Measuring the past 20 years of urban-rural land growth in flood-prone areas in the developed Taihu Lake watershed, China. Frontiers of Earth Science 2017, 11, 361 -371.

AMA Style

Weizhong Su. Measuring the past 20 years of urban-rural land growth in flood-prone areas in the developed Taihu Lake watershed, China. Frontiers of Earth Science. 2017; 11 (2):361-371.

Chicago/Turabian Style

Weizhong Su. 2017. "Measuring the past 20 years of urban-rural land growth in flood-prone areas in the developed Taihu Lake watershed, China." Frontiers of Earth Science 11, no. 2: 361-371.

Journal article
Published: 01 June 2016 in Science of The Total Environment
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There are tremendous theoretical, methodological and policy challenges in evaluating the impact of land-use change on the degradation of ecosystem services (ES) at the regional scale. This study addresses these challenges by developing an interdisciplinary methodology based on the Procedure for Ecological Tiered Assessment of Risk (PETAR). This novel methodology integrates ecological models with a land-use change model. This study quantifies the multi-dimensional degradation risks of ES in the Taihu Lake Basin (TLB) of China from 1985 to 2020. Four key ES related to water purification, water quantity adjustment, carbon sequestration and grain production are selected. The study employs models of Denitrification-Decomposition (DNDC), Soil-Water-Atmosphere-Plant (SWAP), Biome-BGC and Agro-ecological Zoning (AEZ) for assimilations. Land-use changes by 2020 were projected using a geographically weighted multinomial logit-cellular automata (GWML-CA) model. The results show that rapid land-use change has posed a great degradation risk of ES in the region in 1985–2020. Slightly less than two-thirds of the basin experienced degradation of ES over the 1985–2010 period, and about 12% of the basin will continue to experience degradation until 2020. Hot spots with severe deterioration in 2010–2020 are projected to be centered around some small and less developed cities in the region. Regulating accelerated urban sprawl and population growth, reinforcing current environmental programs, and establishing monitoring systems for observing dynamics of regional ES are suggested as practical counter-measures.

ACS Style

Xibao Xu; Guishan Yang; Yan Tan; Qianlai Zhuang; Hengpeng Li; Rongrong Wan; Weizhong Su; Jian Zhang. Ecological risk assessment of ecosystem services in the Taihu Lake Basin of China from 1985 to 2020. Science of The Total Environment 2016, 554-555, 7 -16.

AMA Style

Xibao Xu, Guishan Yang, Yan Tan, Qianlai Zhuang, Hengpeng Li, Rongrong Wan, Weizhong Su, Jian Zhang. Ecological risk assessment of ecosystem services in the Taihu Lake Basin of China from 1985 to 2020. Science of The Total Environment. 2016; 554-555 ():7-16.

Chicago/Turabian Style

Xibao Xu; Guishan Yang; Yan Tan; Qianlai Zhuang; Hengpeng Li; Rongrong Wan; Weizhong Su; Jian Zhang. 2016. "Ecological risk assessment of ecosystem services in the Taihu Lake Basin of China from 1985 to 2020." Science of The Total Environment 554-555, no. : 7-16.

Journal article
Published: 30 September 2014 in Sustainability
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Understanding the link between greenspace patterns and land surface temperature is very important for mitigating the urban heat island (UHI) effect and is also useful for planners and decision-makers for providing a sustainable design for urban greenspace. Although coupling remote sensing data with a computational fluid dynamics (CFD) model has widely been used to examine interactions between UHI and greenspace patterns, the paper aims to examine the impact of five theoretical models of greenspace patterns on land surface temperature based on the improvement of the accuracy of CFD modeling by the combination of LiDAR data with remote sensing images to build a 3D urban model. The simulated results demonstrated that the zonal pattern always had the obvious cooling effects when there are no large buildings or terrain obstacles. For ambient environments, the building or terrain obstacles and the type of greenspace have the hugest influence on mitigating the UHI, but the greenspace area behaves as having the least cooling effect. A dotted greenspace pattern shows the best cooling effect in the central area or residential district within a city, while a radial and a wedge pattern may result in a “cold source” for the urban thermal environment.

ACS Style

Weizhong Su; Yong Zhang; Yingbao Yang; Gaobin Ye. Examining the Impact of Greenspace Patterns on Land Surface Temperature by Coupling LiDAR Data with a CFD Model. Sustainability 2014, 6, 6799 -6814.

AMA Style

Weizhong Su, Yong Zhang, Yingbao Yang, Gaobin Ye. Examining the Impact of Greenspace Patterns on Land Surface Temperature by Coupling LiDAR Data with a CFD Model. Sustainability. 2014; 6 (10):6799-6814.

Chicago/Turabian Style

Weizhong Su; Yong Zhang; Yingbao Yang; Gaobin Ye. 2014. "Examining the Impact of Greenspace Patterns on Land Surface Temperature by Coupling LiDAR Data with a CFD Model." Sustainability 6, no. 10: 6799-6814.

Journal article
Published: 26 September 2014 in Sustainability
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Urban floods are linked to patterns of land use, specifically urban sprawl. Since the 1980s, government-led new districts are sweeping across China, which account for many of the floods events. Focuses of urbanization impact on floods are extending gradually from hydraulic channels, to imperviousness ratio, to imperviousness pattern in urban areas or urbanized basins. Thus, the paper aims to explore how urban land pattern can affect floods in urban areas to provide decision makers with guidance on land use and stormwater management. Imperviousness was generally correlated with spatial variations in land use, with lower imperviousness in less dense, new districts, and higher imperviousness in more dense, uniform/clustered development in local areas adjacent to hot nodes. The way imperviousness and channel are organized, and the location of imperviousness within a catchment, can influence floods. Local government’s approach to new district planning, in terms of zoning provisions, has only considered some development aspects and has not adequately integrated flood management. A key issue for the planning should been done to adequately cater for flooding, particularly considering the benefits of keeping natural conveyance systems (rivers) and their floodplains to manage flood waters.

ACS Style

Weizhong Su; Gaobin Ye; Shimou Yao; Guishan Yang. Urban Land Pattern Impacts on Floods in a New District of China. Sustainability 2014, 6, 6488 -6508.

AMA Style

Weizhong Su, Gaobin Ye, Shimou Yao, Guishan Yang. Urban Land Pattern Impacts on Floods in a New District of China. Sustainability. 2014; 6 (10):6488-6508.

Chicago/Turabian Style

Weizhong Su; Gaobin Ye; Shimou Yao; Guishan Yang. 2014. "Urban Land Pattern Impacts on Floods in a New District of China." Sustainability 6, no. 10: 6488-6508.

Journal article
Published: 26 May 2014 in International Journal of Environmental Research and Public Health
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Since the 1980s a series of farmland policies have been implemented in China to stabilize the balance of farmland quantity and quality against accelerating urbanization and industrialization processes. This paper aims to reveal differences of soil fertility in the farmland occupation area (FOA) and farmland supplement area (FSA). In 1985–2000 the decline of the FOA area was 181,000 ha, but the FSA rarely increased. In 2000–2010 the decline of the FOA area was 824,800 ha, but the FSA increased dramatically. The accelerating loss process is closely related to urbanization and industrialization of the locations. Most occupied farmland was still located in the areas with higher soil fertility. The FOA in 1985–2000 had higher soil fertility than the FSA, but the FSA in 2000–2010 significantly raised its soil fertility to close to the FOAs’ level. The rate of excellent-good levels of the FOA in 2000–2010 decreased from 46.13% to 37.61%; The development model shifts and farmland policies implementation are the chief driving factors behind AFOS changes. The TDBF policy and the main function zoning project should continue to play an effective role in balancing the farmland system.

ACS Style

Weizhong Su; Gaobin Ye. Differences of Soil Fertility in Farmland Occupation and Supplement Areas in the Taihu Lake Watershed during 1985–2010. International Journal of Environmental Research and Public Health 2014, 11, 5598 -5612.

AMA Style

Weizhong Su, Gaobin Ye. Differences of Soil Fertility in Farmland Occupation and Supplement Areas in the Taihu Lake Watershed during 1985–2010. International Journal of Environmental Research and Public Health. 2014; 11 (6):5598-5612.

Chicago/Turabian Style

Weizhong Su; Gaobin Ye. 2014. "Differences of Soil Fertility in Farmland Occupation and Supplement Areas in the Taihu Lake Watershed during 1985–2010." International Journal of Environmental Research and Public Health 11, no. 6: 5598-5612.