乌梁素海水污染与水生生物学研究

本文研究了乌梁素海水化学特点对水生生物区系的影响,生物区系特点与湖泊富营养化的问题。 发现湖泊中浮游植物87种,浮游动物64种,底栖动物12种。其中富营养型的生物种类占绝对优势,浮游植物群落结构为绿藻+兰藻+硅藻型,而兰藻为优势种,占各站优势种和次优势种属的46％;浮游动物中轮虫和原生动物合计占73％;底栖动物中羽摇蚊在十个站点中有六个的数量占90％以上。同时,湖水中营养成分N、P含量丰富,总磷和三氮的含量均已超出或接近日本规定的富营养化标准,表明湖泊已富营养化。 但是,BOD、DO、pH、矿化度、钾离子量和一价离子与二价阳离子数量的比例,可能尚不是湖中限制因子,故湖泊富营养化未达到严重的程度。

Study on Relation between.Water Pollution and Hydrobiology for the Wu Liang Su Hai

In this paper, the effect of hydrochemistry character on hydrobios fauna and the relation between biological form and eutrophication were studied.Dealing with wu Liang Su Hai as a whale, there are 87 species of phytoplankton. 64 species of zooplankton, 12 species of zoobenthos. Number of species for eutrophication occupies absolute dominant position. Structure of various phyto-planktin groups are chlorophyto and cyanophyta and bacillariophyto. However, the cyanophyta is predominant species, it occupies 46 % in various station; The rotatoria and protozoa comprised 73% of total species in the community; Tendibes plumosus is predominant species in zoobenthos, abundance comes up to (?) (?) six station. And the concent are rich in N, p of the lake, therefore, the eutrophication of the lake were formed.However, BOD, DO, pH, Salt, amount of K+ ion, and the ratio betweer amount of one-valence and two-valence cation ion, they may not be limit element in the lake, therefore, the eutrophication degree of the Wu Liang Su Hai is not serious.