OALib Journal期刊
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松花江哈尔滨段水域硅藻植物群落及其水质的初步评价
DOI: 10.18307/2010.0112
Keywords: 硅藻植物,群落结构,松花江哈尔滨段水域,水质评价
Abstract:
2005-2006年5-9月、12月的两年间,在松花江哈尔滨段水域进行了硅藻植物的调查采集,经观察鉴定,共发现硅藻植物72种43变种3变型,分别隶属于2纲6目9科23属,共计118个分类单位。本文对松花江哈尔滨段水域的环境特征,硅藻植物群落组成、种类丰度的季节性变化进行了研究,利用硅藻植物与环境相关性特点对水质进行了初步评价。研究结果表明松花江段哈尔滨水域的硅藻植物群落,总体来说以普生种类(共计86个分类单位)为每年的常见种类,还有-些嗜碱种类和冷水种类出现;硅藻种类的丰度随季节变化明显,从夏季到秋季逐渐增多。硅藻的群落结构变化主要受pH,温度,TN,BOD5,氨氮的影响,从优势种的组成来看,β-中污以上的污水指示种类数量最多,-些富营养化种类和耐污种类也有出现,说明2005-2006年松花江流域水质污染呈中度至重度污染。
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