健康长江水域生态指标体系初探

从长江水域现状出发，提出一套能全面反映健康长江内涵的水域生态健康状况评价指标体系，为长江流域水资源保护与开发提供依据。明确了健康长江的内涵，定义了健康要素，初步提出健康长江水域生态指标体系，建立评价模型，对每个指标分别赋予权重，并确立健康状况评价标准。利用该指标体系以武汉江段为例进行案例研究，得出长江武汉江段的健康状况为亚健康。河流水质状况、河床和河岸稳定性及水文状况较好，但对水生生物尤其是珍稀水生生物的保护和对河岸带的管理工作要加强。

PRELIMINARY DISCUSSION OF THE EVALUATION INDEX SYSTEM FOR THE AQUATIC ECOSYSTEM OF THE HEALTHY YANGTZE RIVER

Based on the current status of the Yangtze waters,an integrated evaluation index system for the aquatic ecosystem health of the Yangtze River was proposed, providing support for the water resources protection and development of the Yangtze River Basin. In this paper, the connotation of the Healthy Yangtze,as well as the constituents, was well defined. An index system for the aquatic ecosystem of the Healthy Yangtze River was brought forward where an evaluation model was developed. The weight of each index was determined and the evaluation standards were established. This evaluation index has been applied to a research of the Wuhan stretch of the Yangtze River. The study has come to the conclusion that the Yangtze River was challenged with sub-health problem. The water quality,the stability of the river bed and bank,and the hydrological regime were in a fairly good condition, while the protection of aquatic organism especially rare species and the management of river bank zones needed to be intensified.