南宁市南湖水质改善与水生态修复策略研究  

Study on the Water Quality Improvement and Aquatic Ecosystem Restoration Strategies in South Lake,Nanning City

作　　者：尚文 成水平[2] 叶烽 夏博宇 SHANG Wen;CHENG Shuiping;YE Feng;XIA Boyu(Tongji Architectural Design(Group)Co.,Ltd.,Shanghai,China,200092;College of Environment Science and Engineering,Tongji University,Shanghai,China,200092;Nanjing Zhongke Water Environment Engineering Co.,Ltd.,Nanjing,Jiangsu,China,210016)

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092 [2]同济大学环境科学与工程学院,上海200092 [3]南京中科水治理股份有限公司,南京516001

出　　处：《园林》2024年第6期33-40,共8页Landscape Architecture Academic Journal

基　　金：国家重点研发计划项目“长江黄河等重点流域水资源与水环境综合治理”(编号:2023YFC3209005)。

摘　　要：城市湖泊是生态系统的重要组成部分,由于受人类活动干扰及外源、内源污染物输入等影响,其水生态系统退化,水环境质量恶化。通过对典型城市湖泊——南宁市南湖进行溢流口强化处理与生态净化、污水口设施改造、补水口水质优化、底泥清淤疏浚及水生态系统构建等,使湖区水质提升至地表水Ⅳ类标准,水体透明度提高到1.80m以上。水生态系统构建是南湖水质改善与水生态修复的核心,通过湖底生境营造,沉水植物群落构建,浮游动物、底栖动物及鱼类投放等,使“藻型”浑水态湖泊生态系统转变为以沉水植物为主的“草型”清水态湖泊生态系统,恢复了水生态系统完整性,水体营养状态由中度富营养转变为中营养,这对国内其他城市湖泊水质改善与水生态修复具有重要借鉴意义。Urban lakes were essential to the ecosystem,but due to human activities and inputs of external and internal pollutants,the aquatic ecosystem degraded,and the water environment quality deteriorated.South Lake in Nanning City was a typical urban lake;by strengthening treatment and ecological purifi cation of overfl ow outlets,renovating sewage outlet facilities,optimiz-ing water quality at replenishment outlets,dredging sediment,and constructing an aquatic ecosystem,the water quality was improved to surface water quality standard class IV and the transparency of the water body was increased to over 1.80 m.The construction of the aquatic ecosystem was the core part of water quality improvement and aquatic ecological restoration in South Lake.Through the creation of lake bottom habitats,the construction of submerged plant communities,and the release of plankton,benthic animals,and fi sh,the algae-type turbid lake ecosystem has been transformed into a grass-type transparent lake ecosystem dominated by submerged plants,the integrity of the aquatic ecosystem was restored,the nutritional status of the lake was changed from moderately eutrophic to moderately eutrophic.These measures have important reference signifi cances in improving the water quality and restoring the aquatic ecosystem for other urban lakes in China.

关 键 词：城市湖泊 水质改善 水生态修复 生境营造 生物操纵 工程实践 

分 类 号：TU986[建筑科学—城市规划与设计]