天门市中小河流水生态环境评价与保护

为了掌握湖北省天门市水环境质量状况，制定水生态环境恢复和保护规划，选择该市主要河湖典型断面进行了水质监测分析。分析结果表明，天门市城区河流、湖泊、沟渠的水质均为劣Ⅴ类，水生态系统遭受破坏，水体的污染已经成为制约当地社会经济发展的制约因素。根据对该市水环境状况的分析，制定了水污染控制规划、城市生态水网规划、城市水体生态修复与滨水景观规划、河道综合整治规划以及水生态管理保障体系建设规划。

Discussion on evaluation and protection of aquatic ecosystem of middle and small rivers in Tianmen City

In order to make clear the water environmental quality condition of Tianmen City and prepare a plan for restoring and protecting the aquatic ecosystem of the city,the typical sections of lakes and rivers were selected for water quality analysis and monitoring.The results show that the water quality of the rivers,lakes and ditches in the urban area are poorer than V type,the aquatic ecosystem is damaged severely,and water pollution has become a limiting factor for social and economic development of the city.Based on the analysis of water environmental condition of Tianmen City,the water pollution control plan,urban ecological water network plan,urban water body restoration and waterfront landscape plan,comprehensive river channel regulation plan and management and guarantee system plan for aquatic ecology are made.