巢湖东部水源区及入湖河流水体磷形态特征和来源探讨  

Speciations Character and Sources of Phosphorus in the Eastern Water Source Areas and Inflow Rivers of Chaohu Lake

作　　者：陈航[1] 曹昕鑫[1] 秦汝[1] 张习[1] 曹勇[1] 东方超[1] 李玉成[1] 王宁[1] 

机构地区：[1]安徽大学资源与环境工程学院

出　　处：《上海环境科学》2012年第6期260-264,共5页Shanghai Environmental Sciences

基　　金：国家科技攻关巢湖水专项,编号:2008ZX07103-005;国家科技攻关淮河水专项,编号:2008ZX07010-004;国家自然科学基金,编号:40972092;安徽省自然科学基金,编号:090413083

摘　　要：为研究入湖河流对水源区水质的影响,在2010-01—2011-03期间,对巢湖东部水源区及3条入湖河流进行每2月1次的水质采样分析,研究了水体磷形态特征,并对其来源进行了初步探讨。结果表明,研究区总磷（TP）呈季节性变化,丰水期高于枯水期;双桥河污染物来源复杂且含量高,其水体磷浓度高于柘皋河和小柘皋河;主湖区磷含量低且波动小;取水口离湖岸较近,受陆地影响呈现出与总磷相似的季节性变化。入湖河流是湖泊磷污染的重要来源,与富营养化密切相关。关键形态的颗粒磷（PP）对水源区水体磷影响较大,其主要源于地表径流夹带的含磷土壤和流域内的生活污水及农业废水等非点源污染,而内源磷对湖区贡献较小。Water samples were taken once every two months in the period of January 2010 till March 2011. The sampling sites were situated at the eastern water source zone and three inflow streams of Chaohu Lake. The morphological character of phosphorus was investigated whilst its potential origins were preliminarily explored. Results showed that the content of phosphorus in water bodies presented seasonal variations, i.e., higher in flood season than in drought period. Shuangqiao River had complicated sources of pollutants with high contents, so that its water body contained more phosphorus than that in Zhegao or Xiaozhegao River. The content of phosphorus in the principal lake area was lower and fluctuating gently. As water intakes were close to the bank, they were affected by terrestrial sources and presenting a similar seasonal variation. Inflow streams were found the significant sources of phosphorus pollution, which was closely connected with eutrophication. Particulate phosphorus （PP） was a key species to influence the phosphorus content in water body of the water source zone in the lake, and mainly came from non-point source pollution including surface runoff carrying soil containing phosphorus, domestic wastewater and agricultural effluent generated in the catchment area. Phosphorus in sediment, however, had a little influence on its content in water body of the lake.

关 键 词：水源区 磷 形态特征 源分析 巢湖 

分 类 号：S273[农业科学—农业水土工程]