广东横石水河大型底栖动物群落与环境因子的关系

被引:21
作者
迟国梁 [1 ,2 ]
赵颖 [3 ]
官昭瑛 [1 ]
王建武 [2 ]
童晓立 [1 ]
机构
[1] 华南农业大学资源环境学院昆虫学系
[2] 华南农业大学热带亚热带生态研究所
[3] 不详
关键词
大型底栖动物; 环境因子; 典范对应分析; 酸性矿山废水; 横石水河;
D O I
暂无
中图分类号
Q958.8 [水生动物学];
学科分类号
摘要
应用典范对应分析(CCA)对横石水河流域14个样点中的大型底栖动物与环境因子的关系进行了研究。结果表明,枯水期和丰水期的物种与环境因子的相关性均在90%以上,说明大型底栖动物在横石水河的分布很大程度上受到环境因子的影响。化学需氧量(COD)和pH值是影响枯水期大型底栖动物分布的两个主要因子,浊度和重金属Cu、Pb浓度对大型底栖动物分布也有一定程度的影响。在丰水期,重金属Cu、Pb浓度和pH值是影响大型底栖动物分布的关键因子。从种类水平看,耐污种类如蠓类、摇蚊和大蚊的丰富度与COD和重金属浓度的环境轴呈正相关,而敏感种类如腹足纲、毛翅目以及蜉蝣目昆虫与COD和重金属浓度的环境轴呈负相关。
引用
收藏
页码:2836 / 2845
页数:10
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