长江科学院院报2024，Vol.41Issue(12)：48-56,65,10.DOI:10.11988/ckyyb.20230891
长江中下游湖泊沉积物氮磷污染现状及治理思路
Pollution of Nitrogen and Phosphorus in Lake Sediments of Middle and Lower Yangtze River:Status and Remediation Strategies
摘要
Abstract
As one of the regions with the most concentrated distribution of freshwater lakes in China,the middle and lower reaches of the Yangtze River has seen significant improvements in water ecological environment in the past decade.However,the trend of lake eutrophication has not been fundamentally contained;the water environment quality and eutrophication of some lakes continue to deteriorate.Current analyses of lake pollution are limited by in-adequate samples,making it challenging to discern regional characteristics among lake groups.In this paper,the characteristics of nitrogen and phosphorus pollution in surface sediments of 23 major lakes in middle and lower Yan-gtze River were analyzed.Results reveal that the average total nitrogen(TN)concentration in river-connected lakes and half-connected lakes are the highest,with no significant differences observed,followed by suburban lakes and urban lakes in descending order.Conversely,the mean total phosphorus(TP)concentration features notable differ-ences,with urban lakes ranking the highest,followed by suburban lakes,river-connected lakes,and half-connect-ed lakes in descending order.Although improvements have been made in the eutrophication status of regional urban and suburban lakes,the comprehensive pollution degree classification suggests that most lakes in the area still face severe pollution challenges.Therefore,there is still an urgent need to strengthen efforts in controlling nitrogen and phosphorus eutrophication.The results provide an overall understanding of the eutrophication of lakes in the middle and lower reaches of the Yangtze River,and support the prevention and control of eutrophication of lakes in the Yangtze River basin.关键词
湖泊群/富营养化/沉积物/氮磷污染控制/长江中下游Key words
lake group/eutrophication/sediment/pollution control of nitrogen and phosphorus/middle and lower Yangtze River分类
资源环境引用本文复制引用
肖德强,董磊,潘雄..长江中下游湖泊沉积物氮磷污染现状及治理思路[J].长江科学院院报,2024,41(12):48-56,65,10.基金项目
武汉市科技局知识创新专项(2023020201020363) （2023020201020363）
