红枫湖浮游植物分布(1995～1996)与水质污染评价初步研究

通过１９９５年４月至１９９６年６月逐月采样，对红枫湖浮游植物的种类组成、种群数量、季节变化、污染指示种、多样性指数、综合藻商、绿藻指数等方面进行研究，初步查清了红枫湖浮游植物的分布现状；选用生物指示法、藻类综合指数、绿藻指数、生物多样性指数等指标对水质污染及营养水平进行评价。红枫湖已受到重污染，属蓝———绿藻型富营养湖泊。

A PRELIMINARY STUDY ON THE DISTRIBUTION OF PHYTOPLANKTON AND WATER POLLUTION IN HONGFONG LAKE

On the basis of investigation for the phytoplankton in Hongfong Lake, Guizhou Province In this Paper the distribution law of phytoplankton has been studied and biological assessment of water pollution has been conducted by using the method of “indicator organism”,“comprehensive index”,“shannon weaver index”,and “Evenness index”,In the Hongfong Lakethe annual mean density of phytoplankton reached 10793×106 cells per litrethe comprehensive index was 42-115the shannon weaver index was 02-079the Evenness index was 0063-0236 In winter and spring the dominant species of planktonic algae were almost entirely compsed green algae,especially Pediastrum and Oocystis In summer and Autumm the dominant species of planktonic algae were almost entirely composed of blue-green algae,especially Miorocystis and AnabaenaAll the features studied indicate that the lake has suffered from serious pollution and can be regarded as a blue-green and green algae eutrophic lake.