Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City
High-intensity land use and fragmented habitats are becoming more prevalent with urbanization, thereby accelerating the demand for maintaining and improving the ecological connectivity of habitat patches in high-density built-up areas. Previous studies have shown that small dispersed patches are cru...
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Editorial Committee of Tropical Geography
2024-04-01
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| Series: | Redai dili |
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| Online Access: | https://www.rddl.com.cn/CN/10.13284/j.cnki.rddl.003858 |
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| author | Jiao Yanan Li Feixue Chen Zhenjie Zhang Qishun Zhao Xin |
| author_facet | Jiao Yanan Li Feixue Chen Zhenjie Zhang Qishun Zhao Xin |
| author_sort | Jiao Yanan |
| collection | DOAJ |
| description | High-intensity land use and fragmented habitats are becoming more prevalent with urbanization, thereby accelerating the demand for maintaining and improving the ecological connectivity of habitat patches in high-density built-up areas. Previous studies have shown that small dispersed patches are crucial for enhancing connectivity across an entire landscape. However, as an important component of urban green space, residential green space in high-density built-up areas is often overlooked in ecological connectivity analysis. Taking Futian district, Shenzhen, as a case study, we explored the ecological connectivity in high-density built-up areas considering not only habitat patches but also green areas in residential quarters. We identified ecological patches and green areas in the residential areas of the study area. This was followed by a functional connectivity analysis under different scenarios. Several protection suggestions for improving ecological connectivity have been proposed based on functional connectivity analyses under different scenarios. The results show: 1) The area of residential green space in Futian district is 3.86 km2, covering 26.9% of the total green space in the study area, with the western part being sparser than other regions. The total area of the ecological patches was 14.34 km2, and the importance of the patches was not consistent with their size. The ecological connectivity of Lianhuashan Park in the central region, Lichi Park in the eastern region, and Huanggang Park in the southern region is greatly affected by the contiguous or continuously distributed strips of residential green space around them. 2) Residential green spaces affect eco-connectivity primarily by lowering corridor resistance, creating connectors for regions that require protection, and supporting biological flow. In particular, it had the largest effect on middle-resistance corridors (the unit cost distance was reduced by 29.2%) and alleviated the situation of pinch points formed in narrow low-resistance channels in high-density built-up areas. 3) The ecological pinch points that recurred in the ecological network under different scenarios of connecting residential green spaces and different resistance thresholds were identified as the most valuable primary pinch points for protection. It is recommended to strengthen the intersection of Xinzhou Road and Fumin Road and prioritize the protection of residential green spaces located near the ecological patches and on the topological connection between the ecological patches, with a scale exceeding the average size of 5,920.22 m2. Through the analysis of pinch points in various scenarios, it was found that 21 pinch points, including those close to Lianhuashan Park, could be used as substitute green spaces for urban renewal projects when nearby residential green spaces are destroyed or occupied. This supports the preservation of functional connectivity in urban renewal projects. It is increasingly difficult to construct significant habitat patches in high-density built-up areas to compensate for habitat fractures. The results identified the significant location and proportion of residential green spaces as critical bio-flow carriers in Futian District. These findings could encourage more comprehensive urban conservation plans that incorporate both sizable habitat patches and residential green spaces. These findings can be used to create more effective sustainable development plans that encourage biodiversity in urban renewal planning. |
| first_indexed | 2024-04-24T08:18:48Z |
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| institution | Directory Open Access Journal |
| issn | 1001-5221 |
| language | zho |
| last_indexed | 2024-04-24T08:18:48Z |
| publishDate | 2024-04-01 |
| publisher | Editorial Committee of Tropical Geography |
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| spelling | doaj.art-f8832881efa5470a9e35417867ac6b4a2024-04-17T02:29:30ZzhoEditorial Committee of Tropical GeographyRedai dili1001-52212024-04-0144459660710.13284/j.cnki.rddl.0038581001-5221(2024)04-0596-12Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen CityJiao Yanan0Li Feixue1Chen Zhenjie2Zhang Qishun3Zhao Xin4School of Geography and Ocean Science Nanjing University, Key Laboratory of Land Satellite Remote Sensing Application ( Ministry of Natural Resources) , Jiangsu Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, ChinaSchool of Geography and Ocean Science Nanjing University, Key Laboratory of Land Satellite Remote Sensing Application ( Ministry of Natural Resources) , Jiangsu Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, ChinaSchool of Geography and Ocean Science Nanjing University, Key Laboratory of Land Satellite Remote Sensing Application ( Ministry of Natural Resources) , Jiangsu Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, ChinaZhangjiagang Bureau of Natural Resources and Planning, Zhangjiagang 215600, ChinaSchool of Geography and Ocean Science Nanjing University, Key Laboratory of Land Satellite Remote Sensing Application ( Ministry of Natural Resources) , Jiangsu Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, ChinaHigh-intensity land use and fragmented habitats are becoming more prevalent with urbanization, thereby accelerating the demand for maintaining and improving the ecological connectivity of habitat patches in high-density built-up areas. Previous studies have shown that small dispersed patches are crucial for enhancing connectivity across an entire landscape. However, as an important component of urban green space, residential green space in high-density built-up areas is often overlooked in ecological connectivity analysis. Taking Futian district, Shenzhen, as a case study, we explored the ecological connectivity in high-density built-up areas considering not only habitat patches but also green areas in residential quarters. We identified ecological patches and green areas in the residential areas of the study area. This was followed by a functional connectivity analysis under different scenarios. Several protection suggestions for improving ecological connectivity have been proposed based on functional connectivity analyses under different scenarios. The results show: 1) The area of residential green space in Futian district is 3.86 km2, covering 26.9% of the total green space in the study area, with the western part being sparser than other regions. The total area of the ecological patches was 14.34 km2, and the importance of the patches was not consistent with their size. The ecological connectivity of Lianhuashan Park in the central region, Lichi Park in the eastern region, and Huanggang Park in the southern region is greatly affected by the contiguous or continuously distributed strips of residential green space around them. 2) Residential green spaces affect eco-connectivity primarily by lowering corridor resistance, creating connectors for regions that require protection, and supporting biological flow. In particular, it had the largest effect on middle-resistance corridors (the unit cost distance was reduced by 29.2%) and alleviated the situation of pinch points formed in narrow low-resistance channels in high-density built-up areas. 3) The ecological pinch points that recurred in the ecological network under different scenarios of connecting residential green spaces and different resistance thresholds were identified as the most valuable primary pinch points for protection. It is recommended to strengthen the intersection of Xinzhou Road and Fumin Road and prioritize the protection of residential green spaces located near the ecological patches and on the topological connection between the ecological patches, with a scale exceeding the average size of 5,920.22 m2. Through the analysis of pinch points in various scenarios, it was found that 21 pinch points, including those close to Lianhuashan Park, could be used as substitute green spaces for urban renewal projects when nearby residential green spaces are destroyed or occupied. This supports the preservation of functional connectivity in urban renewal projects. It is increasingly difficult to construct significant habitat patches in high-density built-up areas to compensate for habitat fractures. The results identified the significant location and proportion of residential green spaces as critical bio-flow carriers in Futian District. These findings could encourage more comprehensive urban conservation plans that incorporate both sizable habitat patches and residential green spaces. These findings can be used to create more effective sustainable development plans that encourage biodiversity in urban renewal planning.https://www.rddl.com.cn/CN/10.13284/j.cnki.rddl.003858residential green spaceecological networkcircuit theoryminimum cumulative resistancehigh-density built-up areashenzhen city |
| spellingShingle | Jiao Yanan Li Feixue Chen Zhenjie Zhang Qishun Zhao Xin Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City Redai dili residential green space ecological network circuit theory minimum cumulative resistance high-density built-up area shenzhen city |
| title | Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City |
| title_full | Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City |
| title_fullStr | Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City |
| title_full_unstemmed | Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City |
| title_short | Impact of Residential Green Space on Ecological Connectivity in High-Density Built-up Areas: A Case Study of Futian District of Shenzhen City |
| title_sort | impact of residential green space on ecological connectivity in high density built up areas a case study of futian district of shenzhen city |
| topic | residential green space ecological network circuit theory minimum cumulative resistance high-density built-up area shenzhen city |
| url | https://www.rddl.com.cn/CN/10.13284/j.cnki.rddl.003858 |
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