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Challenges facing soil science: a view from the outside
Authors
何玉邦
孟星亮
+4 more
宋卓彦
张虎
熬鸿毅
蒋小明
Publication date
1 January 2014
Publisher
'CIRAD (Centre de Cooperation Internationale en Recherche Agronomique Pour le Developpement)'
Abstract
为了解青海湖大型底栖动物的群落结构特征、空间分布格局及关键驱动力,于2011—2012年分4次对青海湖区主体湖、3个子湖和5条入湖河流进行了系统调查。共采集到底栖动物28个分类单元,隶属于3门5纲15科,主体湖区、咸水和淡水子湖及入湖河流分布有9、5、9和15种;它们的密度分别为455.8、1562.7、741.3和331.2 ind./m2;生物量为1.18、3.70、2.75和4.53 g/m2。优势度分析显示,喜盐摇蚊为主体湖区绝对优势种(占总密度的83.32%)。Surfer模拟显示,主体湖区东南部沿岸带的密度和生物量最高,湖心区最低;高峰值主要出现在布哈河、菜挤河等大型河流入湖的河口附近。CCA分析表明:青海湖区大型底栖动物的分布主要受水体pH、水深、总氮和盐度等环境因子的驱动
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