水资源保护2011，Vol.27Issue(6)：9-13,18,6.DOI:10.3969/j.issn.1004-6933.2011.06.003
鄱阳湖水质时空变化及其影响因素分析
Analysis of spatial and temporal variation of water quality and its influencing factors in Poyang Lake
摘要
Abstract
In order to study the spatial and temporal variation of water quality and its influencing factors in Poyang Lake, water quality indices including TN, TP, NH4+-N, COD, and BOD were continuously monitored for many years. The fuzzy comprehensive evaluation method was used to analyze the water quality parameters, and the pollutant flux and SPSS software were used to study the influences of natural factors and human factors on water quality. The results show that the water quality comprehensive evaluation index Y was higher in the dry season than in the wet season, and the value in the normal flow season was between those in dry and wet seasons in Poyang Lake. The water quality of Poyang Lake has shown a deteriorating trend since 1999. The area with water quality superior to grade Ⅲ has decreased from 85.9% in 1999 to 57.8% in 2006, and the area with water quality inferior to grade Ⅲ in 2006 has increased by 50 times since 2002. The chemical pollutant flux out of the lake was much larger than that into the lake, which indicates that the chemical pollutants around the lake are one of the main sources of the pollutants to Poyang Lake. The water quality of the lake has been significantly influenced by human activities. The coefficient of correlation with various industries is greater than 0.807. With the increase of the urban population density, 78% of the domestic, production, and industrial wastewater are directly discharged into the rivers flowing into Poyang Lake, severely affecting the water quality of the lake. It is pointed out in the paper that much attention should be given to the control of the discharge indices and amount of the industrial and agricultural waste and wastewater, and the limit of the water quality indices in fishery culture.关键词
模糊综合评价法/时空变化/污染物通量/水质/鄱阳湖Key words
fuzzy comprehensive evaluation method/ spatial and temporal variation/ pollutant flux/ water quality/Poyang Lake分类
资源环境引用本文复制引用
李荣昉,张颖..鄱阳湖水质时空变化及其影响因素分析[J].水资源保护,2011,27(6):9-13,18,6.基金项目
国家公益性水利行业专项(201001054) （201001054）
赣科技支撑项目(2009BSA13800) （2009BSA13800）
