科研之友
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摘要
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.
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