Phosphorus Distribution and Its Balance Analysis in Lake Nansihu

摘要：

Phosphorus concentrations in surface and core sediments from the Supper Lake Nansihu were investigated. The results showed that sediments from Nanyanghu Lake and Nansihu Lake had significantly higher TP concentrations than that of Zhaoyanghu Lake. The domestic sewage and industry waste water directly flowed into Lake through Laoyun River and Guangfu River are the main reason for TP enrichment and Agricultural recession is also one of the important reason for the increasing TP amount. Results of phosphorus balance showed that the net phosphorus input values were 448×103-726×103 kg a0-1, and phosphorus amount increased year after year, this resembled the vertical distribution trend of core. Data suggested that most of phosphorus entered into lake were laid down into sediment, and the phosphorus content of lake water was only 1.94%–13.7% of the phosphorus content in sediments, and the net phosphorus values of input mainly contributed by human activities, such as domestic waste water, plant effluent and agricultural sewerage, since 1990.

关键词： Nansihu Lake sediment phosphorus distribution phosphorus balance

作者: YANG Liyuan SHEN Ji LIU Enfeng LI Yanhong

作者单位: Department of Geography,University of Jinan,Jinan 250002,Shandong,China Nanjing Institute of Geogra Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,Jiangsu,Chin Department of Geography,University of Jinan,Jinan 250002,Shandong,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1501-1506

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）