滇西云县自然保护地生态系统服务功能重要性评价

Evaluation of the Importance of Nature Reserve Ecosystem Services in Yunxian of Western Yunnan

以滇西云县为评价研究区域,在水源涵养功能重要性、水土保持功能重要性、生物多样性维护功能重要性的单项评价基础上,运用ArcGIS软件数据分析功能,采用最大法(MAX)对县域生态系统服务功能进行集成评价,识别县域内自然保护地生态系统服务功能和生态敏感空间相对关系。综合评价结果显示:研究区生态系统服务功能重要性极重要区占国土面积65.07%,重要区占国土面积27.06%,一般重要区占国土面积7.87%;县域自然保护地生态系统服务功能极重要区占自然保护地面积95.02%,自然保护地生态系统服务功能重要性总体处于极重要等级。单项评价因子中水源涵养功能重要性极重要区占生态红线区域面积85.01%,是区域生态红线划定的主要依据。

Taking Yunxian County in western Yunnan as the evaluation study area,the individual evaluations of the importance of water conservation,the importance of soil and water conservation,and the importance of biodiversity maintenance were conducted,and on the basis of that,the ArcGIS software data analysis function and the maximum method(MAX method)were applied for an integrated evaluation of the ecosystem services in the county,identifying the relative relationship between the ecosystem services and ecologically sensitive spaces of nature reserves in the county.The results showe that the extremely important area of ecosystem service function in the study area accounts for 65.07%of the land area,the important area accounts for 27.06%,and the general important area accounts for 7.87%.The extremely important area of ecosystem service function of nature reserves in the study area accounted for 95.02%of the area of nature reserves,indicating that the importance of ecosystem service functions of nature reserves is in a very important position in the study area.Of the single evaluation factors,the extremely important area of water conservation function accounts for 85.01%of the delineated ecological red line area,which is the main basis for the delineation of the regional ecological red line.