水资源保护Issue(4)：18-22,5.DOI:10.3969/j.issn.10046933.2014.04.005
长湖水质演变特征及水环境现状评价
Variation of water quality and present water environment assessment of Changhu Lake
摘要
Abstract
Based on water quality monitoring data from the period of 2001 to 2011 in Changhu Lake , in Hubei Province , the inter-annual and inter-monthly variations of water quality of the lake are analyzed .The results show that the water quality was worst in 2005 , and then gradually became better .In 2011 , the water quality improved significantly .In a hydrological year , the water quality diminished over the following stages: the wet period , the normal period , and the dry period .The method of fuzzy comprehensive evaluation was used to evaluate the water quality of the lake in 2011 .The results show that the maximum membership degree was I for the three periods , indicating that the water quality was good . The Carlson trophic state index was adopted for eutrophication assessment of the water quality in the wet period .The results show that all the water areas were in a state of moderate eutrophication , except for the Xijiakou water area .Analysis of water environmental pressure shows that the Changhu Lake ecosystem is facing the challenge of degradation .In addition , the amount of the main pollutants into the lake has exceeded its water environmental capacity .关键词
水质/模糊综合评价/卡尔森指数法/富营养化/水环境压力/长湖Key words
water quality/fuzzy comprehensive evaluation/Carlson trophic state index method/eutrophication/water environmental pressure/Changhu Lake分类
资源环境引用本文复制引用
刘建峰,张翔,谢平,朱志龙..长湖水质演变特征及水环境现状评价[J].水资源保护,2014,(4):18-22,5.基金项目
国家自然科学基金（51279143，51179131）；国家社会科学基金 （）
