Integrating fossil and extant plant communities to calibrate paleoelevation of the Qinghai-Tibet Plateau  

作　　者：Yang-Jun Lai Jian-Fei Ye Bing Liu Yun Liu An-Min Lu Fu-Wen Wei Zhi-Duan Chen 

机构地区：[1]State Key Laboratory of Plant Diversity and Specialty Crops and Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [2]China National Botanical Garden,Beijing 100093,China [3]State Key Laboratory of Biocontrol,School of Ecology,Shenzhen Campus,Sun Yat-sen University,Shenzhen 518107,China [4]Sino-Africa Joint Research Center,Chinese Academy of Sciences,Wuhan 430074,China [5]CAS Key Laboratory of Animal Ecology and Conservation Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing 100101,China [6]College of Forestry,Jiangxi Agricultural University,Nanchang 330045,China

出　　处：《Journal of Systematics and Evolution》2025年第1期25-38,共14页植物分类学报(英文版)

基　　金：supported by the National Key Research and Development Program of China(2023YFF0805800);Strategic Priority Research Program of Chinese Academy of Sciences(Nos.XDB31000000 and XDA19050103);the National Natural Science Foundation of China(No.31900190).

摘　　要：The formation of the Qinghai-Tibet Plateau has long been debated,despite the various proxies used to estimate its paleoelevation.Here,we introduce a novel method to calibrate paleoelevation by comparing the fossil and extant plant communities in the Qinghai-Tibet Plateau.Our estimation confirms that the uplift of the plateau was an episodic and heterochronous process.Specifically,the Lhasa Terrane was already elevated by 1 km before the initial India-Asia collision.During the first orogenic stage,the Qiangtang Terrane rose faster than the Lhasa Terrane,attaining 3 km in the late Eocene.In the second stage,the Lhasa Terrane underwent rapid uplift,reaching 3 km in the Oligocene.By the Middle Miocene,both the Qiangtang and Lhasa terranes had achieved an elevation of 4 km.The Himalaya rose by at least 2 km after the Pliocene.Our biological knowledge-based findings contradict the previous geological evidence-based reports,which posited that the plateau had reached an elevation of 4-5 km during the Eocene.We provide a new perspective on the plateau′s uplift history based on biological evidence,which has the potential to reconcile the confusion arising from contradictory proxies.

关 键 词：cluster analysis community similarity fossil assemblages HIMALAYA PALEOELEVATION Tibetan Plateau 

分 类 号：Q94[生物学—植物学]