Vegetation stability during the last two centuries on the western Tibetan Plateau:a palynological evidence

作     者：Yanrong ZHANG Nannan WANG Lina LIU Mingda WANG Xiaoshan YU Xianyong CAO Yanrong ZHANG;Nannan WANG;Lina LIU;Mingda WANG;Xiaoshan YU;Xianyong CAO

作者机构：Alpine Paleoecology and Human Adaptation Group(ALPHA)State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of ScienceBeijing 100049China School of GeographyLiaoning Normal UniversityDalian 116029China 

出 版 物：《Frontiers of Earth Science》 (地球科学前沿（英文版）)

年 卷 期：2023年第17卷第4期

页      面：1049-1058页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by the Basic Science Center for Tibetan Plateau Earth System(BSCTPES,NSFC project No.41988101) CAS Pioneer Hundred Talents Program(Xianyong Cao) 

主　　题：pollen compositional 1species turnover vegetation change ecological stability 

摘      要：Investigating the dynamics of vegetation is an essential basis to know how to protect ecological environments and to help predict any changes in *** of its fragile alpine ecosystem,the Tibetan Plateau is a particularly suitable area for studying vegetation changes and their driving *** this study,we present a high-resolution pollen record covering the last two centuries extracted from Gongzhu Co on the western Tibetan *** steppe is the predominant vegetation type in the surrounding area throughout the past 250 years with stable vegetation composition and abundance,as revealed by pollen spectra dominated by Artemisia,Ranunculaceae,Cyperaceae,and *** canonical correspondence analysis(DCCA)of the pollen data reveals low turnover in compositional species(0.41 SD),suggesting that the vegetation in the Gongzhu catchment had no significant temporal change,despite climate change and population increases in recent *** additionally ran DCCA on ten other pollen records from the Tibetan Plateau with high temporal resolution(1-20 years)covering recent centuries,and the results also show that compositional species turnover(0.15-0.81 SD)is relatively low,suggesting that the vegetation stability may have prevailed across the Tibetan Plateau during recent *** high-resolution pollen records and high taxonomic-resolution palaeo-vegetation records(such as sedaDNA),however,are needed to confirm the vegetation stability on the Tibetan Plateau.