特定河段在河流生态系统中生态定位技术方法探讨——以西江干流大藤峡江段为例

Research on Ecological Positioning Technology for Specific River Section in Fluvial Ecosystem∶Case Study of Datengxia River Section in West Pearl River

探讨了特定河段在河流生态系统中生态定位技术方法,包括生态定位含义、生态位描述方法、生态定位评价指标、指标获取途径、评价方法等。并以珠江流域西江干流大藤峡江段为例,应用资料查阅、监测调查、数据统计和分析、专业判断等方法,分析该河段主要评价指标的分值和生态意义,得出大藤峡江段在流域鱼类资源保护中也具有重要生态地位的结论。河段生态地位分析成果可用于确定特定河段在流域生态环境保护中的生态重要性,为流域管理、生态环境保护规划以及涉河建设项目的选址、选线、取水、排水、环境影响评价等审批提供依据。

In this paper,techniques of ecological positioning in fluvial ecosystem of specific river section are discussed,so as the definition and descriptions of ecological position,indicators and methods to measure ecological position,etc.The Datengxia section of West Pearl river is taken as an example to analyze its ecological position,while methods including data search,mornitoring,data analysics and experts decisions are employed.It shows its ecological position importance in protecting fish resource in Pearl river basin.The analysis of the ecological position of specific river sections facilitates the definition of the importance of the river sections in ecological protection in the river basin,which provides references for the watershed management,ecological protection and the relevant administrative approval.