Research on Ecological Network Construction and Optimization Based on Spatial Classification System:Taking Chaohu Basin as an Example
Rapid and disorderly urbanization has led to the degradation of ecological connections between regional habitat patches,and ecological networks play an important role in restoring ecological processes interrupted by rapid urbanization.Taking Chaohu Basin as an example,this paper introduced spatial classification system based on considerations for manual development,ecological network construction and optimization which are comprehensively carried out using methods such as morphological spatial pattern analysis,landscape connectivity analysis,minimum cumulative resistance model,gravity model,and current theory.Research has shown that the ecological network of Chaohu Basin after optimization consists of 24 ecological source areas,57 ecological corridors and 30 ecological nodes,with a total area of 3 036.58 km2 and a total length of 2 134.30km,forming a structural layout of"one lake,eight cores,and three belts linked together,with three vertical and multiple blue-green interweaving points"will be formed.The network closure,point-line rate,and network connectivity of ecological network in Chaohu Basin after optimization respectively increase 13.55％,31.62％,and 9.36％.
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