Ecological network construction and corridor optimization in Guangdong-Hong Kong-Macao Greater Bay Area
WANG Hai-yun1,2,3, KUANG Yao-qiu4, WEN Xin-jian2, SONG Zhao-pu2, LIU De-hua2
1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2. Institute of Land Resource Surveying and Mapping of Guangdong Province, Guangzhou 510500, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China; 4. School of Environment, Jinan University, Guangzhou 511443, China
Abstract:Taking the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) as the interested area, the MSPA-InVEST model and connectivity evaluation were applied to identify ecological sources, and then on the basis of constructing the ecological resistance surface, the MCR and gravity models were used to extract potential ecological corridors, and the characteristics of industrial agglomeration were considered to construct planned ecological corridors. An ecological network construction scheme that combines ecological protection and economic development was formulated. It is concluded that: There are 35 ecological sources with a total area of about 17165.85km2; 42 basic ecological corridors with a length of 2085.34 km; there are obvious spatial differences between sources and corridors, showing a "central hollowing" spatial pattern; By adding 12 eco-industrial strategic nodes and 28 planned corridors, the closure, connectivity and connectivity rate of the ecological network can be increased by 150%, 26.83% and 28.57%, and the ecological network structure will be transformed into a "cellular" pattern; The comprehensive ecological network constructed by combining natural corridors such as rivers and coasts connects 288 natural reserves in the GBA, forming a comprehensive reservation pattern consisting of mountains, water bodies and wetlands. Overall, the ecological network system constructed from the perspectives of ecological protection and economic development showed good adaptability, which provides a reference for the construction and optimization of the ecological pattern in the Guangdong-Hong Kong-Macao Greater Bay Area.
王海云, 匡耀求, 文薪荐, 宋兆璞, 刘德华. 粤港澳大湾区生态网络构建及廊道优化[J]. 中国环境科学, 2022, 42(5): 2289-2298.
WANG Hai-yun, KUANG Yao-qiu, WEN Xin-jian, SONG Zhao-pu, LIU De-hua. Ecological network construction and corridor optimization in Guangdong-Hong Kong-Macao Greater Bay Area. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(5): 2289-2298.
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