Latitudinal differentiation and patterns of temperate and subtropical plants in the Qinling-Daba Mountains

作     者：LIU Junjie ZHANG Baiping YAO Yonghui ZHANG Xinghang WANG Jing YU Fuqin LI Jiayu LIU Junjie;ZHANG Baiping;YAO Yonghui;ZHANG Xinghang;WANG Jing;YU Fuqin;LI Jiayu

作者机构：State Key Laboratory of Resources and Environmental Information SystemInstitute of Geographic Sciences and Natural Resources ResearchCASBeijing100101China University of Chinese Academy of SciencesBeijing100049China 

出 版 物：《Journal of Geographical Sciences》 (地理学报（英文版）)

年 卷 期：2023年第33卷第5期

页      面：907-923页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：National Scientific and Technological Basic Resources Investigation Project No.2017FY100900 

主　　题：latitudinal plants variation north-south climate dividing line north-south transition zone of China Qinling-Daba Mountains transition pattern 

摘      要：Geographically,the Qinling-Daba Mountains serve as the main body of the north-south transitional zone of ***,the transitional patterns of their plant species still need to be *** study analyzed latitudinal variations of plant species richness,relative importance values(RIV),and plant species abundance based on plant community field survey data for 163 sample sites along three north-south transect lines in the eastern,middle,and western parts of the study *** difference in RIV between subtropical and temperate species(SND-RIV)was selected to reveal the latitudinal interlacing pattern of northern and southern plant *** the eastern(Sanmenxia-Yichang),middle(Xi’an-Dazhou),and western(Tianshui-Guangyuan)transects,the richness and RIV of subtropical plant species increased while those of temperate plant species decreased from north to *** the eastern transect,temperate plant species richness and RIV were the highest at Shennongjia and Funiu Mountain,respectively,because of their high *** the middle transect,subtropical plant species richness and RIV were the highest in the Daba *** the western transect,richness and RIV were higher for subtropical than temperate plant species from the south of *** crisscrossing areas of northern and southern plant species were∼180 km,∼100 km,and∼60 km wide for the eastern,middle,and western transects,respectively,showing a narrowing trend from east to *** the eastern and western transects,decreases in subtropical plant species distribution from south to north could be attributed to a decrease in mean annual precipitation in the same ***,for the middle transect,mean annual temperature had a slightly greater influence on plant species’latitudinal distribution than the moisture *** study provides a more solid scientific basis for future investigations of this key geographical boundary in China.