城郊结合带流域水体富营养化特征及来源分析  

Eutrophication characteristics and source analysis of water bodies in the suburban junction watershed

作　　者：王璐[1] 魏越波 冯攀 段馨雨 候建琴 胡春华[1] WANG Lu;WEI Yuebo;FENG Pan;DUAN Xinyu;HOU Jianqin;HU Chunhua(School of Resources&Environment,Nanchang University,Nanchang 330031,China;Jiangxi Hydropower Engineering Bureau Co.,LTD.,Power Construction Group of China,Nanchang 330096,China;Shangrao Yiyang County Water Resources Bureau,Shangrao Jiangxi 334400,China)

机构地区：[1]南昌大学资源与环境学院,江西南昌330031 [2]中国电建集团江西省水电工程局有限公司,江西南昌330096 [3]上饶市弋阳县水利局,江西上饶334400

出　　处：《南昌大学学报（理科版）》2024年第4期345-351,共7页Journal of Nanchang University(Natural Science)

基　　金：国家环境保护重金属污染监测重点实验室开放基金项目(SKLMHM202312);国家自然科学基金资助项目(41663002);江西省自然科学基金资助项目(20161BAB203080)。

摘　　要：选取南昌市前湖水系为研究对象,运用对数型幂函数普遍适用的指数公式,对其进行富营养化程度评估。同时,进行相关性分析探究水质环境因素与水体富养化水平之间的相互关系。研究结果显示:前湖水系中高锰酸盐指数、氨氮、总磷、总氮、五日生化需氧量5种污染物含量呈现显著的空间分布特征;前湖水系水体富营养化指数(V E)介于51.34~70.52,均呈现水体富营养化,TN、TP与富营养化的相关性分别为0.917和0.912,表明氮磷是导致水体富营养化的主因;氮磷比平均值为19.57,污水处理厂排污、城区及周边的污染汇入等是南昌市前湖水系水体污染物的主要来源。对前湖水系进行研究,旨在提高对城郊结合部水环境的关注度。Qian lake water system of Nanchang city was selected as the object to evaluate the eutrophication using the formula of log power function universality index.At the same time,correlation analysis was conducted to explore the relationship between water quality and environmental factors and water eutrophication level.The results showed that the pollutant content of COD Mn,NH 3-N,TP,TN,and BOD 5 in Qian lake water system of Nanchang City exhibited significant spatial distribution characteristics;the water eutrophication index(V E)of Qian lake ranged from 51.34 to 70.52,all of which displayed eutrophication status,and the associations of TN and TP with eutrophication were 0.917 and 0.912,respectively,indicated that nitrogen and phosphorus were the main cause of water eutrophication.The average ratio of nitrogen and phosphorus was 19.57,and the sewage treatment plant and the pollution from the urban and surrounding areas were the main sources of pollutants in Qian lake water system of Nanchang city.Qian lake water system was researched in order to improve the attention of the water environment in the suburban junction.

关 键 词：前湖水系 富营养化 氮磷比 污染来源 

分 类 号：X131.2[环境科学与工程—环境科学]