大辽河流域水生态系统功能区划研究

Function Regionalization of Water Ecosystem for the Daliaohe Drainage Area

为了明确大辽河流域范围内主要的生态环境问题、生态环境脆弱区和对流域生态安全非常重要的区域,根据流域湿地景观格局的变化及驱动机制分析、流域生态环境敏感性评价和水生态系统服务功能重要性评价,运用定性分区与定量分区相结合的方法和自下而上的划分方法得到大辽河流域水生态系统功能分区图,将大辽河流域划分成5个一级区和13个生态亚区。按照"水体类型+干扰类型+功能类型"对每个生态功能区进行命名,明确了每一个生态功能区的特征,为大辽河流域产业布局、生态环境保护与规划建设提供了科学依据。

The purpose of carrying out the water ecological function zoning is to clear the major ecolog ical problems in this drainage area, the eco-environmental vulnerable sub-regions and the sub-regions which are very important to the watershed ecological security. Function regionalization of water ecosys- tem for the Daliaohe drainage area executes geographical space partitions according to landscape pattern changes and its driving mechanism of the wetland, eco-environmental sensitivity and the importance of water ecosystem service functions, and utilizes the method of combining with qualitative and quantitative of partition as well as the bottom-up partition method. With these methods, the zoning map of Daliaohe River Basin water ecological function is obtained and the Daliaohe drainage area has been divided into 5 first level areas and 13 ecological sub-regions. The ecological function regions are named as ＂water type ＋interference type＋function types＂ to clear every region＇s characteristics and it provides scientific basis for Daliaohe River Basin industrial layout, ecological environment protection and construction planning.