High-altitude tree growth responses to climate change across the Hindu Kush Himalaya

作     者：Lili Zheng Narayan Prasad Gaire Peili Shi Lili Zheng;Narayan Prasad Gaire;Peili Shi

作者机构：Lhasa Plateau Ecosystem Research StationKey Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100190China CAS Key Laboratory of Tropical Forest EcologyXishuanghanna Tropical Botanical GardenChinese Academy of SciencesMenglunMenglaYunnan 666303China Central Department of Environmental ScienceTribhuvan UniversityKirtipurKathniantluNepal 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2021年第14卷第5期

页      面：829-842页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 09[农学] 0903[农学-农业资源与环境] 0706[理学-大气科学] 

基　　金：This work was supported by National Natural Science Foundation of China and ICIMOD Joint Research Project(no.4l661144045) 

主　　题：tree ring high-altitude forests key climate factors tree growth-climate relationships growth trends climate sensitivity 

摘      要：Aims Rapid warming at high altitudes may lead to a higher sensitivity in tree growth to *** key factors constraining tree radial growth and to what extent regional tree growth has suffered from climatic changes are *** Tree-ring width data were collected from 73 sites across the Hindu Kush Himalaya(HKH),including three dominant genera(Abies,Juniperus and Picea)at high altitudes over 3000 *** time warping was introduced to develop subregional chronologies by considering the synchrony of annual tree growth among different *** quantified the contribution of the climate variables,and analyzed the spatiotemporal variation of the growth–climate *** Findings The site chronologies were grouped into three clusters,corresponding to the three distinct bioclimatic zones,*** western HKH,central-eastern HKH and southeastern Tibetan Plateau(TP).Tree growth was positively correlated to winter and spring precipitation in the drier western HKH,and to winter temperature and spring precipitation in the humid southeastern *** growth was markedly constrained by the minimum temperature,especially in winter,with its importance increasing from the west toward the *** shown by moving correlation analysis,the signal of winter temperature in tree growth was weakened in the western and central-eastern HKH,while it was enhanced in the southeastern TP following rapid warming since the *** results highlight that continuous warming may cause forest recession due to warming-induced moisture deficit in the western HKH,but forest expansion in the southeastern TP.