Species Richness of the Family Ericaceae along an Elevational Gradient in Yunnan, China

文献类型： 外文期刊

第一作者： Wang, Ji-Hua

作者： Wang, Ji-Hua;Cai, Yan-Fei;Zhang, Lu;Wang, Ji-Hua;Cai, Yan-Fei;Zhang, Lu;Xu, Chuan-Kun;Xu, Chuan-Kun;Zhang, Shi-Bao

作者机构：

关键词： Ericaceae; variation partitioning; climate; species-area relationship; mid-domain effect

期刊名称：FORESTS （ 影响因子：2.633； 五年影响因子：2.804 ）

ISSN： 1999-4907

年卷期： 2018 年 9 卷 9 期

页码：

收录情况： SCI

摘要： Knowledge about how species richness varies along spatial and environmental gradients is important for the conservation and use of biodiversity. The Ericaceae is a major component of alpine and subalpine vegetation globally. However, little is known about the spatial pattern of species richness and the factors that drive that richness in Ericaceae. We investigated variation in species richness of Ericaceae along an elevational gradient in Yunnan, China, and used a variation partitioning analysis based on redundancy analysis ordination to examine how those changes might be influenced by the mid-domain effect, the species-area relationship, and climatic variables. Species richness varied significantly with elevation, peaking in the upper third of the elevational gradient. Of the factors examined, climate explained a larger proportion of the variance in species richness along the elevational gradient than either land area or geometric constraints. Species richness showed a unimodal relationship with mean annual temperature and mean annual precipitation. The elevational pattern of species richness for Ericaceae was shaped by the combined effects of climate and competition. Our findings contribute to a better understanding of the potential effects of climate change on species richness for Ericaceae.

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