人民长江2023，Vol.54Issue(12)：24-33,10.DOI:10.16232/j.cnki.1001-4179.2023.12.004
大型城市浅水湖泊水环境综合治理
Comprehensive water environment treatment of large shallow urban lake:case of East Lake in Wuhan City
摘要
Abstract
East Lake in Wuhan City is one of the largest urban lakes in China.Its water ecological environment is closely related to the lake ecosystem in the central Changjiang River Basin,and also has a significant impact on the environmental carrying ca-pacity and urban sustainable development of Wuhan City.With the rapid development of three major industries and the accelera-tion of urbanization process in East Lake basin,the frequency of lake resource consumption is increasing rapidly,and the carrying capacity of lake water environment is becoming increasingly insufficient.This study aims to propose an effective and sustainable"East Lake Pattern"for watershed water environment treatment based on the typical characteristics of large shallow urban lakes.East Lake is faced with outstanding problems as a large amount of tail water from sewage treatment plants entering the lake,seri-ous overflow pollution during rainstorm,sediment pollution in local lake areas,serious degradation of water ecosystem,and incom-plete comprehensive management mechanism.Following the water environment treatment concept of"basin coordination and sys-tematic treatment",with the core goal of limitation on pollutant carrying capacity and water quality control,key technical measures have been proposed including top-level design of watershed planning,gray-green-blue system of water and bank co-treat-ment,precise environmentally friendly sediment desilting,and initial habitat regulation of aquatic ecological restoration.Besides,two important regulation systems of institutional guarantee and intelligent supervision have been formed.Results show that since the official launch of the treatment project of East Lake in 1985,the overall water quality has been improved from worse than Grade Ⅴ at the end of the 20th century to Grade Ⅲ～Ⅳ in 2019,and the coverage rate of aquatic plants has increased from the extreme value of 0.7％in 2010 to 3.3％in 2019.The water environment treatment of East Lake has achieved significant results,which can provide a reference and guidance for other shallow urban rivers and lakes.Finally,to improve the water environment continuously and realize long-term limpidity of East Lake,the work focus and directions for the following treatment have been proposed.关键词
水环境治理/水环境承载力/水生态修复/植被覆盖率/武汉东湖Key words
water environment treatment/water environment carrying capacity/aquatic ecological restoration/coverage rate of a-quatic plants/East Lake in Wuhan City分类
资源环境引用本文复制引用
彭军,桂梓玲,岳克栋,张枫,邹俊波..大型城市浅水湖泊水环境综合治理[J].人民长江,2023,54(12):24-33,10.基金项目
湖北省重点研发计划项目"湖北典型城市湖泊水生态保护修复关键技术研究及示范"(2020BCA073) （2020BCA073）
水利部技术示范项目"河湖水环境综合治理关键技术推介"(SF-TJ-202012) （SF-TJ-202012）
