长江中下游水功能区考核指标体系研究与构建

Research and construction of evaluation index system of water function zone in mid-lower reaches of Yangtze River

水功能区划是实行最严格水资源管理制度的基本单元。为了对长江中下游水功能区是否达标进行考核,基于水功能区划理论、管理现状与考核要求,采用频度分析、理论分析和专家咨询等方法,确定并建立了水功能区考核指标体系的构建原则及考核指标结构框架。包括水环境、水文水资源、水生态3类属性层和筛选出的生态基流、敏感环境需水量、水质达标率、污染物入河控制量、浮游植物多样性指数、鱼类多样性指数和珍稀物种生存状况等7个主要指标。所建立的水功能区考核评价体系,为落实最严格的水资源管理制度奠定了良好的基础。

Water function zone is the basic unit for implementing the strictest water resources management system. In order to evaluate the water function zone in the mid - lower reaches of Yangtze River, based on the theory of water function zoning, water resources management status, examination demand, we determined the establishing principle and structure of evaluation index system of water function zone. The system include 3 categories, namely water environment, hydrology and water resources and water ecology and 7 screened main indexes of ecological basic flow, sensitive ecological water demand, qualified rate of water quality, pollutant amount into river, diversity index of phytoplankton, diversity index of fish and living conditions of rare species. The system construction lays a foundation for implementing the strictest water resources management system.