Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas
As the main carbon sink in the carbon cycle process, vegetation is an important support for achieving “carbon peaking” and “carbon neutrality. How does the vegetation coverage of urban built-up areas change in the process of urbanization in China? Taking advantage of Landsat remote sensing data, we...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Land |
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| Online Access: | https://www.mdpi.com/2073-445X/12/1/235 |
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| author | Jinlong Chen Zhonglei Yu Mengxia Li Xiao Huang |
| author_facet | Jinlong Chen Zhonglei Yu Mengxia Li Xiao Huang |
| author_sort | Jinlong Chen |
| collection | DOAJ |
| description | As the main carbon sink in the carbon cycle process, vegetation is an important support for achieving “carbon peaking” and “carbon neutrality. How does the vegetation coverage of urban built-up areas change in the process of urbanization in China? Taking advantage of Landsat remote sensing data, we extract urban built-up areas, calculate the Normalized Difference Vegetation Index (NDVI), estimate fractional vegetation cover (FVC), and analyze the temporal and spatial dynamics of vegetation coverage in built-up areas of provincial capitals from the national and individual city levels in China. Major conclusions are as follows: (1) The FVC in the urban built-up areas has increased by 7.97%, and the urban green space has gradually changed from the “green core” distribution model to the “green vein” distribution mode. (2) The disparities in FVC of built-up areas of provincial capitals are notable, presumably due to a variety of factors that include the natural geographic environment, economic development level, built-up area expansion, land type conversion, afforestation of greening policy, etc. (3) Not just simply raise or lower, the FVC curves in the built-up areas of provincial capital cities present oscillating patterns with gradually weakening amplitude. Our study is expected to provide scientific references of an important theoretical basis for urban ecological construction and practical support for promoting the harmonious development of urban residents and urban environments in China. |
| first_indexed | 2024-03-09T11:58:58Z |
| format | Article |
| id | doaj.art-c12fa7caef4040d4b3bbe8b89a4e328c |
| institution | Directory Open Access Journal |
| issn | 2073-445X |
| language | English |
| last_indexed | 2024-03-09T11:58:58Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Land |
| spelling | doaj.art-c12fa7caef4040d4b3bbe8b89a4e328c2023-11-30T23:06:12ZengMDPI AGLand2073-445X2023-01-0112123510.3390/land12010235Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up AreasJinlong Chen0Zhonglei Yu1Mengxia Li2Xiao Huang3The College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaThe College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaThe College of Geography and Environmental Science, Henan University, Kaifeng 475004, ChinaDepartment of Geosciences, University of Arkansas, Fayetteville, AR 72701, USAAs the main carbon sink in the carbon cycle process, vegetation is an important support for achieving “carbon peaking” and “carbon neutrality. How does the vegetation coverage of urban built-up areas change in the process of urbanization in China? Taking advantage of Landsat remote sensing data, we extract urban built-up areas, calculate the Normalized Difference Vegetation Index (NDVI), estimate fractional vegetation cover (FVC), and analyze the temporal and spatial dynamics of vegetation coverage in built-up areas of provincial capitals from the national and individual city levels in China. Major conclusions are as follows: (1) The FVC in the urban built-up areas has increased by 7.97%, and the urban green space has gradually changed from the “green core” distribution model to the “green vein” distribution mode. (2) The disparities in FVC of built-up areas of provincial capitals are notable, presumably due to a variety of factors that include the natural geographic environment, economic development level, built-up area expansion, land type conversion, afforestation of greening policy, etc. (3) Not just simply raise or lower, the FVC curves in the built-up areas of provincial capital cities present oscillating patterns with gradually weakening amplitude. Our study is expected to provide scientific references of an important theoretical basis for urban ecological construction and practical support for promoting the harmonious development of urban residents and urban environments in China.https://www.mdpi.com/2073-445X/12/1/235urban vegetation coverageremote sensinggreen spaceurban built-up areaurbanization |
| spellingShingle | Jinlong Chen Zhonglei Yu Mengxia Li Xiao Huang Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas Land urban vegetation coverage remote sensing green space urban built-up area urbanization |
| title | Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas |
| title_full | Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas |
| title_fullStr | Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas |
| title_full_unstemmed | Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas |
| title_short | Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas |
| title_sort | assessing the spatiotemporal dynamics of vegetation coverage in urban built up areas |
| topic | urban vegetation coverage remote sensing green space urban built-up area urbanization |
| url | https://www.mdpi.com/2073-445X/12/1/235 |
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