基于水功能区划的海河流域重要河湖健康评估体系

Health Assessment Index System of Important Rivers and Lakes in Haihe River Basin based on Water Function Zoning

水功能区划管理和河湖健康评估是两种不同的水资源管理制度。为构建海河流域重要河湖健康评估方法,结合海河流域基本特征,根据不同水功能区的自然属性和主导水体功能类型,确定河湖评估的重点并设置不同水功能区评估体系各属性权重及评估指标,建立了基于水功能区划的海河流域重要河湖健康评估体系,该体系包含水文特性、形态结构、水质特性、生物特性、社会服务功能5个属性层25项河流健康评估指标和24项湖泊健康评估指标;同时,选择漳河作为代表性河流构建河流健康评估框架。利用基于水功能区划的河湖健康评估体系评估海河流域重要河湖健康状况,有助于促进水功能区水质、水量和水生态三者统一管理,为海河流域重要河湖管理与生态系统保护提供技术支撑。

Water function zoning and health assessment of rivers and lakes are two important regulations for protection and management of water resources. Health assessment index system of important rivers and lakes for Haihe River basin was established based on water function zoning. 24 indicators for river health assessment index system and 23 indicators for lakes health assessment index system according to basic characteristics of Haihe River Basin were put forward from five criteria layers including hydrology,physical structure,water quality,biological characteristics,and social service according to the natural properties and leading function of the rivers or lakes. Emphasis of health assessment was determined and the weights of different attributes and evaluation index were set up according to the functions of different rivers or lakes. Meanwhile,Zhanghe River was selected as a representative River to set up a framework for river health assessment based on the described methods. Health assessment index system of Haihe River Basin based on water function zoning is an important method to evaluate health status of rivers and lakes,realize organic combination of water quality,water quantity and water ecological and provide technical support for important rivers and lakes of Haihe River Basin management and ecosystem protection.