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OALib Journal期刊
ISSN: 2333-9721
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春季昌江大型底栖无脊椎动物群落结构及功能摄食类群的空间分布
DOI: 10.3724/SP.J.1145.2012.00163, PP. 163-169
Keywords: 鄱阳湖流域,大型底栖无脊椎动物,群落结构,空间分布,功能摄食类群,生境
Abstract:
于2009年4~5月采集鄱阳湖支流昌江的大型底栖无脊椎动物，研究其物种组成及其功能摄食类群的空间分布状况，并通过功能摄食类群组成评价昌江流域河流的生境状况.结果表明：四节蜉、宽基蜉、细蜉和多突癞皮虫为昌江的优势类群，其中四节蜉为昌江流域内4条支流共同的优势类群.冗余分析表明，昌江底栖动物主要受水体中总溶解固体和溶解氧的影响.收集者为昌江各支流主要的功能摄食类群；对昌江流域支流间功能摄食类群参数进行比较发现，指示物质循环方面的参数为昌江干流>北河>东河>大北河，指示物质的纵向输送能力方面的参数为大北河>东河>北河>昌江干流，指示沿岸物质的输入方面的参数为大北河>昌江干流>东河>北河.对各功能摄食类群参数和环境因子进行相关分析，流量的增加会加速河流中沿岸凋落物的输入，水温的升高会加速凋落物的分解，进而会增加河流中有机碳和其他溶解物质的含量.图3表5参22
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