扬州市邗江滨湖区生态涵养重要性评价及分区

Evaluation and zoning of ecological conservation of the Hanjiang lakeside district in Yangzhou

以扬州市邗江区部分区域为研究区,以500 m×500 m为基本生态单元,对研究区进行网格化处理;选取水系构成指数、水功能设施指数、水质目标指数、基本农田占比指数、生态红线管控指数为生态指标,采用多因素综合分析法分析不同生态单元的生态约束程度,进而分析不同生态单元的生态涵养重要性。结果表明:不同生态约束"极高"、"高"、"中等"、"低"占地面积分别为研究区总面积的7.36%、25.76%、43.22%和23.66%;进而对研究区进行生态涵养重要性分区,划分为发展区、储备区、缓冲区和保护区,分别占总用地的10.33%、40.66%、36.04%和12.97%。评价结果对规划邗江滨湖区未来的生态涵养产业分布、促进生态保护和经济协调发展具有重要意义。

Hanjiang district in Yangzhou City was divided into a series of ecological units （ 500 m×500 m）, and then the ecological conservation of each unit was evaluated through multi-factor comprehensive analysis method based on five ecological elements including drainage component index, water conservancy facilities index, water quality target index, index of farmland ratio, and ecological red line control index. Four ecological constraint levels （highest, high, general, and low） were used to indicate ecological conservation, and their area occupying ratios were 7.36%, 25.76%, 43.22% and 23.66%, respectively. The study area was classified into four sub-function zones including potential development zone, reserved zone, transition zone, and protection zone, and they accounted for 10.33%, 40.66%, 36.04% and 12.97%, respectively. The evaluation re- sults of ecological conservation of Hanjiang lakeside district in Yangzhou City is of great signifi- cance for promoting a balance between its ecological protection and economic development.