湖泊科学2016，Vol.28Issue(5)：961-971,11.DOI:10.18307/2016.0505
夏季滇池和入滇河流氮、磷污染特征
Characteristic of nitrogen and phosphorous pollution in Lake Dianchi and its inflow rivers in summer
摘要
Abstract
To investigate the spatial distribution of nutrients in the inflow rivers and their influence on the eutrophication of Lake Dianchi, water samples were collected from Lake Dianchi and four different types of the inflow rivers during July of 2014. The four different types of rivers were named as the river in the urban areas, the river in the combination of urban and rural areas, the river dominated by non-point source pollution, and the river dominated by sewage pollution in town and village. The results indicated that, total nitrogen ( TN) , total phosphorus ( TP ) , nitrate nitrogen, and ammonium nitrogen concentrations from the four inflow rivers were very high. The mean concentrations of TN and TP from these inflow rivers were in the order:rivers dominated by non-point source pollution ( Dahe River) > rivers dominated by sewage pollution in town and village ( Chaihe River) > rivers in the combination of urban and rural areas ( Baoxiang River) > rivers in the urban areas ( Panlong River) . The TN and TP concentra-tions from the rivers dominated by non-point source pollution ( Dahe River) were the highest. In summer, it is clearly that the TN and TP concentrations increased from the upstream to the downstream in all four inflow rivers, which means that the TN and TP constantly accumulated. The ratio of nitrogen and phosphorus showed that both TN and TP were sufficient for algal growth from all inflow rivers in summer, but the algal growth in Lake Dianchi was limited by TN. The TN and TP concentrations from the southeast-ern inflow rivers were higher than those from the northwestern rivers, but the law was opposite in Lake Dianchi. Therefore, we speculated that the internal pollutant sources are the major cause of eutrophication of Lake Dianchi. The deeply researches should focus on the internal pollutions for the study on the eutrophication of Lake Dianchi in the future.关键词
滇池/入湖河流/营养状况/氮/磷/污染Key words
Lake Dianchi/inflow rivers/nutrition status/nitrogen/phosphorus/pollution引用本文复制引用
余丽燕,杨浩,黄昌春,黄涛,余艳红,姜泉良,刘大庆,李帅东..夏季滇池和入滇河流氮、磷污染特征[J].湖泊科学,2016,28(5):961-971,11.基金项目
国家自然科学基金项目（41503075，41571324）、中国博士后基金面上项目（2015M581826）和云南省环境科学研究院（中国昆明高原湖泊国际研究中心）开放基金项目联合资助 （）
