Ecosystem health assessment of urban rivers and lakes-Case study of “the six lakes”in Beijing,China  

作　　者：Fengling ZHANG Jingling LIU Zhifeng YANG Yongli LI 

机构地区：[1]State Key Joint Laboratory of Environmental Simulation and Pollution Control,School of Environment,Beijing Normal University,Beijing 100875,China

出　　处：《Frontiers of Environmental Science & Engineering》2008年第2期209-217,共9页环境科学与工程前沿（英文）

基　　金：This study was supported by the National Basic Research Program of China(Grant No.2006CB403403);Key Program of the National Natural Science Foundation of China(Grant No.50238020)。

摘　　要：The assessment of the ecosystem health of urban rivers and lakes is the scientific basis for their management and ecological restoration.This study developed a three-level indicator system for its assessment.The results indicated that:Zhonghai and Nanhai are in the state of transition from unhealthy to critical state and all the other lakes are in unhealthy states.Water environmental quality,structure and function of the aquatic ecosystem,and the structure of waterfront areas were the constraints.Nanhai was ranked as poor and the others were all ranked as very poor.However,the ecological environment of Zhonghai and Nanhai were better than the others,the sums of the degree of membership to the healthy state and critical state were all close to 0.6.and the restorations of these lakes were moderate.The sums of the degree of membership to the healthy state and critical state of the other lakes were under 0.3,as it was difficult to restore these lakes.Some suggestions on scientific management and ecological restoration of the six lakes were proposed:①To control non-point pollution and to improve the water quality of six lakes and the water entering into these lakes;②To improve the hydrological conditions of six lakes;③To rehabilitate the aquatic ecosystem and waterfront areas.

关 键 词：urban rivers and lakes ecosystem health assessment indicator system the six lakes 

分 类 号：X52[环境科学与工程—环境工程]