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采用加权指数求和法,从生态服务功能、景观生态空间格局以及生态敏感性3方面建立生态重要性空间识别指标体系,通过专家咨询和层次分析法确定各评价指标分级赋值标准和权重,结合GIS空间分析功能对“延龙图”(延吉-龙井-图们)地区生态用地的生态重要性进行空间识别,将其划分为3个级别:极重要、重要和一般重要,以反映不同生态用地保护级别和建设管制要求。结果表明,延龙图地区极重要生态用地占生态用地面积的25.720%,主要为耕地、林地和水域;重要生态用地占生态用地面积的39.500%,主要为林地和耕地;一般重要生态用地占生态用地面积的34.780%,以林地为主。
The method of weighted index summation is used to establish the index system of spatial identification of ecological importance from the aspects of ecological service function, landscape ecological spatial pattern and ecological sensitivity. Through the expert consultation and analytic hierarchy process, the grading standards and weights of each evaluation index are determined, Spatial Analysis Function Spatially identify the ecological importance of the ecological land in the Yanlong-Tumen region (Yanji-Longjing-Tumen region) and classify them into three levels: extremely important, important and generally important to reflect different ecological Site protection level and construction control requirements. The results showed that the important ecological land in Yanlongtu area accounted for 25.720% of the total ecological land area, mainly cultivated land, forest land and water area; the important ecological land occupied 39.500% of the ecological land area, mainly forest land and cultivated land; and the most important ecological land occupied ecology 34.780% of the land area is mainly woodland.