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Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas

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  • Jinlong Chen

    (The College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
    Key Research Institute of Yellow River Civilization and Sustainable Development, Collaborative Innovation Center on Yellow River Civilization Jointly Built by Henan Province and Ministry of Education, Henan University, Kaifeng 475001, China
    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430072, China)

  • Zhonglei Yu

    (The College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
    Key Research Institute of Yellow River Civilization and Sustainable Development, Collaborative Innovation Center on Yellow River Civilization Jointly Built by Henan Province and Ministry of Education, Henan University, Kaifeng 475001, China)

  • Mengxia Li

    (The College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
    Key Research Institute of Yellow River Civilization and Sustainable Development, Collaborative Innovation Center on Yellow River Civilization Jointly Built by Henan Province and Ministry of Education, Henan University, Kaifeng 475001, China)

  • Xiao Huang

    (Department of Geosciences, University of Arkansas, Fayetteville, AR 72701, USA)

Abstract

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.

Suggested Citation

  • Jinlong Chen & Zhonglei Yu & Mengxia Li & Xiao Huang, 2023. "Assessing the Spatiotemporal Dynamics of Vegetation Coverage in Urban Built-Up Areas," Land, MDPI, vol. 12(1), pages 1-17, January.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:1:p:235-:d:1032745
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    References listed on IDEAS

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