洞庭湖内湖水质变化趋势及其成因简析  

Trends of Water Quality and Major Environmental Problems of the Inner Lakes of the Dongting Lake District

作　　者：李清 王丹 徐玲[3] LI Qing;WANG Dan;XU Ling(Yiyang Ecological Monitoring Center,Yiyang Hunan 413000,China;不详)

机构地区：[1]湖南省益阳生态环境监测中心,湖南益阳413000 [2]益阳市生态环境局大通湖分局,湖南益阳413509 [3]湖南城市学院,湖南益阳413000

出　　处：《环境科学导刊》2024年第6期67-72,共6页Environmental Science Survey

基　　金：湖南省益阳市科技应用基础研究与软科学研究计划(益财教指[2023]102号)。

摘　　要：为探究洞庭湖内湖水质变化情况及其存在的主要环境问题、服务于洞庭湖总磷污染控制与削减攻坚,基于2016—2021年洞庭湖内湖水质监测数据,分析了44个典型内湖的水质类别、总磷浓度及综合营养状态指数变化趋势。结果表明:①千龙湖、柳叶湖和后江湖水质相对较好,华容东湖、大通湖和北民湖水质相对较差;②总磷是洞庭湖内湖水质的决定性因子;③近年来持续的污染防治工作促使洞庭湖内湖总磷浓度不断下降,综合营养状态指数稳中向好,内湖水质总体改善明显。分析了华容东湖、大通湖和黄盖湖等内湖污染的主要原因,提出控源降磷、畅通河湖、恢复水域、修复生态等对策建议。To investigate the changes of the water quality of Dongting Lake's inner lakes and their major environmental problems serving for the total phosphorus pollution control in Dongting Lake,the water quality type,total phosphorus mass concentration and trends of comprehensive eutrophication state index of 44 typical inner lakes in Dongting Lake district were analyzed based on the water quality monitoring data of inner lake from 2016 to 2021.The results showed that the water quality of Qianlong Lake,Liuye Lake and Houjiang Lake was relatively good,while the water quality of Huarong East Lake,Datong Lake and Beimin Lake was relatively poor.Total phosphorus is the decisive factor of the water quality of the inner lake in Dongting district.In recent years,the continuous pollution prevention and control work has led to the continuous decline of the total phosphorus concentration in the inner lake of Dongting district,the comprehensive eutrophication state index was stable and improving,and the overall water quality of the inner lake has improved significantly.The main causes of pollution in inner lakes such as Huarong East Lake,Datong Lake and Huanggai Lake were examined.Suggestions were put forward to control sources and reduce phosphorus,unblock rivers and lakes,restore water areas,and restore ecology.

关 键 词：洞庭湖内湖 水质 总磷 生态环境问题 

分 类 号：X824[环境科学与工程—环境工程]