Current climate overrides past climate change in explaining multi-site beta diversity of Lauraceae species in China  

作　　者：Ziyan Liao Youhua Chen Kaiwen Pan Mohammed A.Dakhil Kexin Lin Xianglin Tian Fengying Zhang Xiaogang Wu Bikram Pandey Bin Wang Niklaus E.Zimmermann Lin Zhang Michael P.Nobis 

机构地区：[1]CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu,610041,China [2]University of Chinese Academy of Sciences,Beijing,100039,China [3]Swiss Federal Institute for Forest,Snow and Landscape Research WSL,Zürcherstrasse 111,CH-8903,Birmensdorf,Switzerland [4]Botany and Microbiology Department,Faculty of Science,Helwan University,Cairo,11790,Egypt [5]Department of Forest Sciences,University of Helsinki,P.O.Box 27,Helsinki,FI-00014,Finland [6]Academy of Agriculture and Forestry,Qinghai University,Xining,810016,China

出　　处：《Forest Ecosystems》2022年第2期186-199,共14页森林生态系统（英文版）

基　　金：This work was financially supported by the National Key Research and Development Program of China(Grant No.2016YFC0502101);the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant No.SQ2019QZKK1603);a Visiting Scholarship funded by the China Scholarship Council(Grant No.202004910612).

摘　　要：Background:We aimed to characterise the geographical distribution of Sørensen-based multi-site dissimilarity(β_(sor))and its underlying true turnover(β_(sim))and nestedness(βsne)components for Chinese Lauraceae and to analyse their relationships to current climate and past climate change.Methods:We used ensembles of small models(ESMs)to map the current distributions of 353 Lauraceae species in China and calculated β_(sor) and its β_(sim) and β_(sne) components.We tested the relationship between β_(sor),β_(sne) and β_(sim) with current climate and past climate change related predictors using a series of simultaneous autoregressive(SAR_(err))models.Results:Spatial distribution of β_(sor)of Lauraceae is positively correlated with latitude,showing an inverse rela-tionship to the latitudinalα-diversity(species richness)gradient.High β_(sor) occurs at the boundaries of the warm temperate and subtropical zones and at the Qinghai-Tibet Plateau due to high β_(sne).The optimized SAR_(err) model explainsβ_(sor) andβ_(sne) well,but notβ_(sim).Current mean annual temperature determinesβ_(sor) and β_(sne) of Lauraceae more than anomalies and velocities of temperature or precipitation since the Last Glacial Maximum.Conclusions:Current low temperatures and high climatic heterogeneity are the main factors explaining the high multi-siteβ-diversity of Lauraceae.In contrast to analyses of the β-diversity of entire species assemblages,studies of single plant families can provide complementary insights into the drivers of β-diversity of evolutionarily more narrowly defined entities.

关 键 词：Biodiversity conservation Current climate Ensemble modelling Multi-siteβ-diversity NESTEDNESS Past climate change True turnover 

分 类 号：S718.5[农业科学—林学]