摘要
城市湖泊作为城市生态的重要组成部分,具备防洪调蓄、生物多样性保护、景观文旅等多种重要功能。随着我国城市化进程的飞速发展,城市湖泊污染日益严重,掌握城市湖泊水生态系统的健康状况是开展精准治理和生态修复与保护的重要基础。为此,针对西南山地型深水湖库特点,以德阳市东湖为例,采用综合指标法选取生物、生境、水质三大层次共33个指标对东湖进行了水生态系统健康评价。结果表明:东湖生态系统健康综合得分62.95分,评价为亚健康状态,主要表现为渔业过度养殖、山地地表径流带来各类面源污染、湖区水体流动性较差等导致水质恶化、水生态系统被破坏,为此,提出了建议:从渔业管理、面源污染治理、生态补水、重构湖区水生态系统4个方面针对性地开展生态修复工作。
Urban lakes,as an important component of urban ecology,play various important functions such as flood control and storage,biodiversity protection,landscape culture and tourism.With the rapid development of urbanization in China,urban lake pollution is becoming increasingly serious.Mastering the health status of urban lake water ecosystems is an important foundation for precise governance,ecological restoration,and protection.The results indicate that the comprehensive score of ecosystem health in East Lake is 62.95 points,and it is evaluated as a sub healthy state.The main manifestations are excessive aquaculture in fisheries,various non-point source pollution caused by mountain surface runoff,poor water flow in the lake area,etc.,which leads to water quality deterioration and damage to the water ecosystem.It is recommended to carry out targeted ecological restoration work from four aspects:fisheries management,non-point source pollution control,ecological replenishment,and reconstruction of the lake area's water ecosystem.
作者
刘时彦
汪君晖
陈阳
董平
毛永光
Liu Shiyan;Wang Junhui;Chen Yang;Dong Ping;Mao Yongguang(China Construction Third Engineering Bureau Green Industry Investment Co.Ltd.,Wuhan,Hubei 430056,China)
出处
《绿色科技》
2023年第18期79-86,共8页
Journal of Green Science and Technology
关键词
深水湖库
山地湖库
水生态构系统评价
评价体系
deep-water lakes and reservoirs
mountain-type lakes and reservoirs
evaluation of aquatic ecosystem
evaluation system
