河流生态状况分级系统及其应用  

Rating system of river ecological conditions and its applications

作　　者：董哲仁[1] 张爱静[1] 张晶[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《水利学报》2013年第10期1233-1238,1248,共7页Journal of Hydraulic Engineering

基　　金：国家"十二五"科技支撑计划课题(2012BAC06B04);水利部公益性行业科研专项(200801023)

摘　　要：构建河流生态状况分级系统可为实现河流生态修复目标定量化提供技术方法。本文从自然河流生态状况的河流参照系统选择与构建出发,依据与参照系统的偏离程度,提出了河流生态状况分级系统的生态指标矩阵方法和指标赋值准则。生态指标矩阵由要素层和指标层构成,包括生物质量、水文、物理化学和河流地貌4个要素,下设10项生态指标。从河流生态系统演替的动态特征出发,阐述了河流生态状况分级系统的科学内涵,讨论了河流生态状况分级系统在确定生态修复目标、识别关键胁迫因子以及进行河流健康评估方面的应用。Rating systems of river ecological conditions can act as a technical method to quantify the river ecological restoration objectives. Originated from the selection and construction of river reference system with ecological status of natural rivers, the ecological index matrix and index valuation standard are proposed based on the degree of deviation from the reference system. The ecological index matrix consists of 10 eco logical indices in 4 aspects, i.e. the characteristics of biology, hydrology, and water quality and river geo morphology. On account of the dynamic characteristics of the river ecosystem succession, the connotations of rating systems were discussed, and the applications of rating systems of river ecological conditions to de termine the ecological restoration objectives, identify critical stress factors and assess river health were re searched.

关 键 词：河流生态修复 定量目标 生态状况 分级系统 指标赋值准则 胁迫因子 河流健康 生态演替 

分 类 号：X171[环境科学与工程—环境科学]