牡丹江中游底栖动物分布及其与栖境因子的关系

被引:23
作者
王皓冉
陈永灿
刘昭伟
朱德军
段亚飞
机构
[1] 清华大学,水沙科学与水利水电工程国家重点实验室
关键词
牡丹江; 大型底栖动物; 典范对应分析; 栖息地环境因子; 河流等级;
D O I
暂无
中图分类号
X174 [环境动物学];
学科分类号
071012 ; 0713 ;
摘要
2013年秋季对牡丹江中游的3条河流(牡丹江、蛤蟆河、卧龙溪)150km河段进行大型底栖动物野外采样,共采集到大型底栖动物18种,隶属于3门5纲11目16科,其中昆虫纲(Insecta)、腹足纲(Gastropoda)和寡毛纲(Oligochaeta)物种居多.通过典范对应分析(CCA),研究大型底栖动物群落结构与主要的栖息地环境因子之间的相关关系,并通过香农-威纳(Shannon-Wiener)指数等生物多样性指数分析评价河流等级对物种多样性的影响.研究表明,流速、溶解氧、底质中的砾石含量是牡丹江中游影响大型底栖动物分布的关键栖息地环境因子,河流等级对底栖动物群落结构有一定影响,牡丹江干流底栖动物物种多样性高于支流,平均生物密度低于支流,且河流间等级差距越大,差异越显著.
引用
收藏
页码:1197 / 1204
页数:8
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