江西省典型水库前置库沉积物碳氮磷分布特征及污染评价  

Distribution characteristics and pollution assessment of carbon,nitrogen and phosphorus in sediments of pre-dam in Jiangxi Province

作　　者：马露露 张海娜[1] 夏国勋 宋新如 鲁向晖[1,2] 张利超 葛佩琳 Ma Lulu;Zhang Haina;Xia Guoxun;Song Xinru;Lu Xianghui;Zhang Lichao;Ge Peilin(School of Water Resources and Ecological Engineering,Nanchang Institute of Technology,Nanchang 330099,China;Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin,Nanchang 330029,China;Jiangxi Academy of Water Science and Engineering Nanchang 330029,China)

机构地区：[1]南昌工程学院水利与生态工程学院,江西南昌330099 [2]江西省鄱阳湖生态水利技术创新中心,江西南昌330029 [3]江西省水利科学院,江西南昌330029

出　　处：《吉林水利》2024年第4期47-52,共6页Jilin Water Resources

基　　金：江西省科技厅重大科技专项(202224ZDKT17);国家自然科学基金项目(52269013)。

摘　　要：以江西省典型水库玉田水库为例,在其上游设立4级前置库系统,分析前置库丰水期和枯水期表层沉积物(0~5cm)的碳氮磷含量并进行评价,以探究碳氮磷分布特征及其污染状况。结果显示:丰水期表层沉积物的总氮(TN)、总磷(TP)和有机质(OM)极显著高于枯水期(P<0.01)。丰水期时,除TP在2、3级无显著差异外,TN、TP和OM在各级之间呈显著递增趋势(P<0.05);枯水期时,1级的TN、TP、OM含量均为最高值,2级最低。Pearson相关分析显示沉积物中OM、TN和TP之间均呈极显著正相关关系(P<0.01),OM与TN和TP表现出高同源性。前置库系统中FF和OI污染程度分别为中度和重度。研究结果可为湖库周边面源污染防治管理提供基础数据与科学依据。Taking Yutian Reservoir,a typical reservoir in Jiangxi Province,as an example,a 4-stage pre-dam system upstreamset was set up,and the carbon,nitrogen and phosphorus contents of the surface sediment(O~5 cm)in the front reservoir were analysed and evaluated during the wet and dry period,in order to explore the characteristics of the distribution of carbon,nitrogen and phosphorus as well as their contamination status.The results showed that the total nitrogen(TN),total phosphorus(TP)and organic matter(OM)of surface sediments in the wet period were significantly higher than those in the dry period(P<0.01).During the wet period,there was a significant incremental trend of TN,TP,and OM among the levels,except for no significant difference in the TP of the levels 2 and 3(P<0.05);during the dry period,TN,TP,and OM in the sediments of the Class 1 pre-dam,and the lowest content in Class 2.Pearson's correlation analysis showed highly significant positive correlations(P<0.01)between OM,TN and TP in the sediments,and OM showed high homology with TN and TP.The pollution levels of FF and OI in the pre-dam were moderate and severe,respectively.The results of the study can provide basic data and scientific basis for the prevention and management of surface source pollution around the lake and reservoir.

关 键 词：玉田水库 前置库 表层沉积物 污染状况 

分 类 号：X87[环境科学与工程—环境工程] TV697.22[水利工程—水利水电工程]