基于聚类分析和因子分析的鄱阳湖流域水质时空变化特征及污染源分析

发布时间：2018-05-04 23:30

  本文选题：鄱阳湖流域 + 水质　； 参考：《南昌大学学报(理科版)》2016年04期

【摘要】：从2011~2015年对鄱阳湖丰、枯水期湖区、出湖口及流入鄱阳湖的5大支流进行采样,测定各项水质指标,运用聚类分析法分析水质时空变化特征,采用因子分析法定性识别了流域水质污染的主要污染源。结果表明,鄱阳湖整体水质呈下降趋势,总氮、总磷含量逐渐上升,鄱阳湖枯水期各项水质指标高于丰水期,枯水期污染更加严重;出湖口、赣江南支以及饶河入湖口污染相对严重,修水入湖口水质较好;因子分析结果表明,造成鄱阳湖流域水质污染的污染物主要来源于市政污水、化学工业废水、天然污染源、采砂作业和湖上养殖,丰水期农业生产引起的农业非点源排放以及暴雨径流引起的非点源排放也占有一定比例。
[Abstract]:From 2011 to 2015, the five major tributaries of Poyang Lake during the periods of abundant and dry water were sampled, the water quality indexes were measured, and the temporal and spatial variation characteristics of water quality were analyzed by cluster analysis. The main pollution sources of water pollution in the river basin were identified qualitatively by factor analysis method. The results showed that the overall water quality of Poyang Lake showed a downward trend, the total nitrogen and total phosphorus content increased gradually, the water quality indexes of Poyang Lake in the dry season were higher than those in the high water period, and the pollution was more serious in the dry season. The results of factor analysis show that the pollutants that cause water pollution in Poyang Lake basin mainly come from municipal sewage, chemical industry wastewater, natural pollution source. Sand mining and lacustrine farming, agricultural non-point source emissions caused by agricultural production in high water season and non-point source emissions caused by rainstorm runoff also account for a certain proportion.
【作者单位】： 南昌大学鄱阳湖环境与资源利用教育部重点实验室资源环境与化工学院;江西省水利科学研究院江西省鄱阳湖水资源与环境重点实验室;
【基金】：国家自然科学基金(31560148) 江西省科技计划项目(20132BBG70025,20161BAB203080) 江西省水利厅科技项目(KT201505) 鄱阳湖环境与资源利用重点实验室支持项目(13005879,13005870) 江西省水利科学研究院科研基金项目(sky201503) 水利部鄱阳湖水资源水生态环境研究中心开放基金项目(ZXKT201508)
【分类号】：X524
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本文编号：1845171