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巴音布鲁克高寒草原羊茅(Festuca ovina)群落生态位特征
Authors
于建梅
张晓艳
+5 more
李凯辉
柳妍妍
热合木都拉·阿迪拉
王鑫
胡玉昆
Publication date
1 January 2009
Publisher
Abstract
为了解高寒草原羊茅群落植物生态位特征,运用Levins生态宽度指数和Cowell生态位相似性比例,对巴音布鲁克羊茅群落植物生态位宽度及生态位相似性比例进行计算。结果表明:9种植物4个资源维上羊茅的生态位宽度最大,其次为黄花棘豆、委陵菜,说明羊茅对环境的适应能力最强。生态位宽度较大的羊茅和紫花针茅与其他物种生态位相似性比例最高,说明羊茅和紫花针茅与其他物种存在着较大的资源竞争。而生态位较小的物种与其他物种生态位相似性比例较小。放牧使得羊茅群落内物种发生变化,在放牧压力持续增大的情况下,以羊茅和紫花针茅为优势种群的草原将向以黄花棘豆和委陵菜占优的退化方向演替
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Last time updated on 29/11/2016