Driving Force Analysis of Spatio-temporal Changes in Vegetation Coverage in Pearl River Delta Based on Geographic Detector Model

• Published in: Shuitu baochi tongbao Vol. 43; no. 6; pp. 336 - 345
• Main Authors: Shen Mingtan, Tan Bingxiang, Hou Ruixia, Yu Hang, He Chenrui, Huang Yifei
• Format: Journal Article
• Language: Chinese
• Published: Science Press 01.12.2023
• Subjects: fraction vegetation cover; geographic detector; google earth engine; pearl river delta
• ISSN: 1000-288X
• DOI: 10.13961/j.cnki.stbctb.2023.06.039

[Objective] The driving forces of the spatial distribution and spato-temporal changes in fractional vegetation coverage (FVC) in the Pearl River delta were analyzed in order to provide a scientific reference for the protection of the ecological environment in the region. [Methods] A binary pixel model was used with Landsat 5 TM and Landsat 8 OLI data to invert the vegetation coverage of the Pearl River delta in 2000, 2005, 2010, 2015, and 2020. The spatial pattern and spatio-temporal changes in FVC in the Pearl River delta were analyzed. Annual precipitation, average annual temperature, population density, and land use data during the five study periods were analyzed using correlation coefficients and the geographical detector method. [Results] ① Vegetation coverage in the Pearl River delta was lower in the middle of the region and higher in the marginal regions. Vegetation coverage was lower in Foshan, Zhongshan, Zhuhai, Southwestern Guangzhou, Dongguan City, and Shenzhen City, and higher in Zhaoqing, Jiangm