Identification and restoration strategy of key areas for territorial space ecological restoration in Shanghai, China based on ecological security pattern

doi:10.13287/j.1001-9332.202212.024

Abstract

Abstract: In the new era, ecological restoration of territorial space is the important task of maintaining regional ecological security, improving regional ecological quality and providing high-quality ecological products. From the perspective of ecological security, accurately determination of key areas to be restored in the territorial space is the primary work, and it is also a key and difficult problem to scientifically carry out ecological restoration. Based on the mainstream ecological security pattern theory, taking Shanghai as the research area, we integrated morphological spatial pattern analysis method and InVEST model to identify ecological sources, extracted ecological corridors, ecological “pinch points” and obstacle points with circuit theory, comprehensively determined the key areas to be restored, and proposed targeted restoration strategies. The results showed that the ecological sources of Shanghai were mainly distributed in the Yangtze River estuary, Chongming Island, Hangzhou Bay coast, and Dianshan Lake, accounting for about 17.9% of the study area. There were 103 key ecological corridors. The key areas to be repaired included 12 ecological “pinch points” and 54 ecological obstacle points, which were mainly distributed at the border of ecological source and ecological corridor, as well asthe intersection or turning point of ecological corridor and ecological corridor. According to the typical problems of key areas to be restored and land use conditions, three types of restoration strategy zones were proposed: ecological landscape reshaping, important corridor penetration, and ecological shoreline protection and restoration. The results could provide reference for compiling a territorial space ecological restoration plan in Shanghai and building a medium-scale ecological security pattern and carrying out systemic ecological restoration work in other regions of China.

Key words: territorial space ecological restoration, ecological security pattern, ecological “pinch point”, ecological obstacle point, Shanghai

YAN Yu-yu, SUN Yan-wei, LIU Min. Identification and restoration strategy of key areas for territorial space ecological restoration in Shanghai, China based on ecological security pattern[J]. Chinese Journal of Applied Ecology, 2022, 33(12): 3369-3378.

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