渭河流域水生态系统群落结构特征及其健康评价

被引：44

作者：

徐宗学 ^{[1
,2
]}

武玮 ^{[1
,2
,3
]}

殷旭旺 ^{[4
]}

机构：

[1] 北京师范大学水科学研究院

[2] 水沙科学教育部重点实验室

[3] 济南大学资源与环境学院

[4] 大连海洋大学水产与生命学院

来源：

水利水电科技进展 | 2016年 / 36卷 / 01期

关键词：

生物完整性指数; 鱼类; 底栖动物; 着生藻类; 渭河流域; 群落结构; 健康评价;

D O I：

暂无

中图分类号：

X826 [生物评价、生态评价];

学科分类号：

1402 ;

摘要：

以渭河流域为对象,基于77个点位的水生态采样和调查结果,分析了该流域干支流着生藻类、大型底栖动物和鱼类3种生物类群群落结构特征,采用生物完整性指数评价了渭河流域鱼类、大型底栖动物和着生藻类的完整性,并对3种生物类群进行评价分析与比较。结果表明:基于3种生物类群的水生态系统健康评价结果存在一定差异,主要是由于3种生物类群对环境变化的响应各有不同,其中大型底栖动物的评价结果最好,其次为着生藻类,鱼类健康评价结果最差。综合来看,渭河流域水生态系统健康状况较差,受人类活动影响明显,大体表现为从上游到下游健康状况越来越差的趋势。对于渭河流域,影响鱼类、大型底栖动物和着生藻类的环境因子各有不同。通过系统全面地调查分析渭河流域不同生物类群的群落结构,可为流域水生态系统恢复提供科学依据。

引用

页码：23 / 30

页数：8

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