|关键词: 水生态环境质量综合指数 徐州市 河流 水环境质量评价
|Application of Water Eco environment Quality Index to Evaluation River Sections in Xuzhou
LI Zhao，WEI Chao
Jiangsu Xuzhou Environmental Monitoring Center, Xuzhou,Jiangsu 221000, China
|Water eco environment quality index was adopted to evaluate the water environment quality of 11 state controlled cross sections of major rivers in Xuzhou city. The results showed that the water eco environment quality of Xuzhou city was overall good, ranged from Mild pollution to Excellent level. It indicated that the ecological quality of Xuzhou Rivers, by and large, was in Good level. Spearman correlation analysis indicated that hydrochemical index was significantly correlated with macrobenthic index, and Periphytic Algae was negatively correlated with habitat indexes. The water eco environment quality index makes up for shortage that the comprehensive results of water quality evaluation can not be obtained by only using hydrochemical index or biological index individual. Habitat index was added for the first time, which reflected the change of environmental management from index control to ecological protection. In this index, related issues such as how to select various sub indexes need to be further improved.
|Key words: Water eco environment quality index Xuzhou City River Water environment quality evaluation