【摘要】For a quantitative biogeographical regionalization,the choice of an appropriate dissimilarity index to measure pairwise distances is crucial.Several different metrics have been used,but there is no specific study to test the impact of metric choice on biogeographical regionalization.We herein applied a hierarchical cluster analysis on the mean nearest taxon distance(MNTD) and the phylogenetic turnover component of the S(?)rensen dissimilarity index(pβsim) pairwise distances to generate two schemes of phylogenetic regio nalization of the Chinese flora,and then evaluated the effect of metric choice.Floristic regionalization based on MNTD was influenced by richness differences,but regionalization based on pβsim can clearly reflect the evolutionary history of the Chinese flora.We provided a brief description of the five regions identified by pβsim,and the regionalization can help develop strategies to effectively conserve the taxa and floristic regions with different origins and evolutionary histories.
【关键词】
《建筑知识》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《现代制造技术与装备》 2015-06-25
《中外医疗》 2015-07-06
《重庆与世界》 2015-07-01
《广州大学学报(社会科学版)》 2015-07-06
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