摘要
为了解淀山湖水生态系统中氮、磷的循环过程与特征，于１９９０～１９９５年间在全湖布设的２５个样点上调查、测定了淀山湖水生态系统中各营养级的种类组成、生物量、生产力，以及水质和底质情况；并估算了淀山湖氮、磷的主要输入与输出途径和数量。根据湖中生物体内氮、磷的含量建立了淀山湖水生态系统内氮、磷循环模式。氮、磷输入、输出统计表明，磷基本平衡，氮每年约有１１７．７２ｔ积累在湖中。淀山湖目前仍以有机污染为主，处在中营养向富营养湖泊的过渡阶段。各类水生生物对于维持淀山湖水生态系统的物质平衡具有重要作用。
The specific composition,biomass and productivity of each trophic level in the aquatic ecosystems of Dianshan Lake were measured and estimated in 1990～1995.According to the contents of nitrogen and phosphorous in the organisms of lake,the diagram of nutrients cycle in the ecosystem had been drawn.The calculated results of input and output of nutrients indicated that phosphorous was kept approximately balanced,while 117.72 tons of nitrogen was accumulated per year in the lake.The pollutants in Dianshan Lake were mainly organic and the lake was at meso eutrophic stage.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第4期293-296,共4页
China Environmental Science
关键词
湖泊
物质循环
水生态系统
淀山湖
nutrients cycle,aquatic ecosystem,Dianshan Lake.
