太阳岛景观水体藻类演替与生物多样性变化  

Succession and biodiversity change of algae in static landscaping water body of Sun land

作　　者：丛科明[1] 刘书宇[1,2] 马放[1] 任南琪[1] 齐志勇 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]上海大学环境与化学工程学院,上海201800 [3]哈尔滨市环境工程评估中心,哈尔滨150076

出　　处：《黑龙江科技学院学报》2009年第2期90-93,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：国家重点基础研究发展规划973项目(2004CB418505)

摘　　要：采用微宇宙培养法模拟北方景观水体富营养化过程,揭示浮游藻类的演替趋势及多样性变化。研究表明,北方静止景观水体在无外源污染输入情况下,水体污染程度加重主要来源于底泥向上覆水释放营养物质。富营养过程中,藻类并不是所有物种共同繁殖生长,而是优势物种逐渐发生演替。演替过程为:初期为绿藻门、迁移至蓝藻门,至富营养化阶段优势种为黄藻门;蓝藻门数量先增加,后减少;黄藻门由于适应低温淡水环境,其个体数量一直上升,最后成为优势种,不同于我国其他淡水湖及景观水体的水华藻类。通过Margalef’s、Menhinick’s、Shannon-W iener、Simp-son’s和OD(多样性测度)多样性指数计算发现,水体富营养化过程中,浮游藻类的物种丰度逐渐变小,多样性减退。This paper describes the use of Tank microcosm to simulate the eutrophication process of static water body in Northern China in landscaping function and offers the study on the succession process and change of biodiversity. The study shows that Eutrophication of water in Northern China comes from bottom mud when no more extrinsic pollutant goes into the water. The phytoplankton changes with the development of various dominant species. The dominant category changes as follows： Cyanophyta is dominant category at the middle stage and disappeared in the last stage, and then changes to Cyanophyta with time. Xanthophyta holds the dominance at the last eutrophication stage for its capability of low temperature. The species number decreases during the process. The dominant species of phytoplankton in static water body differs with other area for temperatures and geography locations. Margalef＇s, Menhinick＇s, Shannon-Wiener, Simpson＇ s and OD indices show that the biodiversity and abundance decrease.

关 键 词：景观水体 浮游藻类 演替 生物多样性 富营养化 

分 类 号：X52[环境科学与工程—环境工程]