摘要
利用2016~2022年五河入湖控制断面每月总磷监测资料和降雨资料进行统计分析,发现入湖总磷负荷随当月降雨量的增加而增加。2022年8~10月,鄱阳湖流域遭遇罕见的干旱灾害,没有地表径流产生,入湖总磷主要来自点源污染。计算分析发现,在当前治污水平下,降雨带入鄱阳湖的总磷面源污染约占入湖总磷负荷的2/3左右。2019年8~12月干旱期同类资料验证了这一结论是可信的。为了鄱阳湖水体总磷浓度达标,当前要将鄱阳湖周边区域点源治理作为着力点,就长远而言,鄱阳湖治污重点要逐步转移到面源污染治理上来。
Based on monthly total phosphorus monitoring data and rainfall data of the control sections of the five rivers into Poyang Lake from 2016 to 2022,this study found that the total phosphorus load into the Lake increased with the increase of rainfall for the same month.From August to October 2022,Poyang Lake basin suffered from rare drought disasters,resulted in little surface runoff,and the total phosphorus mainly came from point source pollution.Results showed that at the current level of pollution control,the total phosphorus from non-point source pollution accounted for about 2/3 of the total phosphorus load into the Lake.Monitoring data during the drought period from August to December 2019 verified the reliability of this finding.In order to achieve the national standard of total phosphorus concentration in Poyang Lake,point source control should be taken as the focus at present.In the long term,the focus of pollution control of Poyang Lake should be transferred to an improved treatment of non-point source pollution.
作者
袁萍
胡振鹏
魏林生
孙军红
YUAN Ping;HU Zhen-peng;WEI Lin-sheng;SUN Jun-hong(Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,Nanchang University,Nanchang 330031,China;School of Resources&Environment,Nanchang University,Nanchang 330031,China;School of Public Health,Nanchang University,Nanchang 330006,China;Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2024年第10期2251-2259,共9页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金项目(41261053)
江西省主要学科学术和技术带头人培养计划--领军人才项目(20204BCJ22016)
江西省自然科学基金项目(S2019ZRMSB1541)。
关键词
面源污染
总磷
污染防治
干旱期
鄱阳湖
non-point source pollution
total phosphorus
pollution control
drought period
Poyang Lake
