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科尔沁沙地流动沙丘-丘间低地过渡带植被分布特征及种间关联

, PP. 832-837

Keywords: font-family,宋体,mso-bidi-font-family,宋体,mso-font-kerning,1.0pt,mso-ansi-language,EN-US,mso-fareast-language,ZH-CN,流动沙丘-丘间低地')",mso-bidi-language&searchField=keyword">href="#">mso-bidi-language,流动沙丘-丘间低地&searchField=keyword">AR-SA">流动沙丘-丘间低地,过渡带,空间分布,种间关联,相关检验,科尔沁沙地

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Abstract:

运用Pearson相关检验、Spearman秩相关检验、CA群落多元统计分析等,系统研究科尔沁沙地流动沙丘与丘间低地过渡带物种的空间分布特征和种间关联性。结果表明物种间表现出有选择性的种间积聚,但偏流动沙丘一侧沙蓬(Agriophyllumsquarrosum)和乌丹蒿(Artemisiawudanica)的分布相对独立,说明沙蓬和乌丹蒿占有相对独立的生态位。丘间低地一侧黄柳[WTBX](Salixgordejevii)和小红柳(Salixmicrostachya[WTBZ]var.bordensis)主要分布于丘间低地北部,占有相似的生态位,而山竹岩黄蓍(Hedysarumfruticosum)主要分布于丘间低地南部,与前两个物种生态位相分离。Pearson相关性检验与Spearman秩相关检验的结果基本一致,负相关种对数高于正相关种对数,存在生态位分化,群落处于不稳定的演替阶段。

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