Differential response of radial growth and δ13C in Qinghai spruce(Picea crassifolia)to climate change on the southern and northern slopes of the Qilian Mountains in Northwest China

Li Qin ¹Huaming Shang ¹Weiping Liu ²Yuting Fan ¹Kexiang Liu ¹Tongwen Zhang ¹Ruibo Zhang¹

扫码查看

作者信息

1. Key Laboratory of Tree-Ring Physical and Chemical Research(CMA)/Xinjiang Key Laboratory of Tree-Ring Ecology,Institute of Desert Meteorology,China Meteorological Administration,Ürümqi 830002,People's Republic of China
2. Xinjiang Meteorological Information Center,Ürümqi 830002,People's Republic of China
折叠

Abstract

Tree radial growth can have significantly differ-ent responses to climate change depending on the environ-ment.To elucidate the effects of climate on radial growth and stable carbon isotope(δ13C)fractionation of Qing-hai spruce(Picea crassifolia),a widely distributed native conifer in northwestern China in different environments,we developed chronologies for tree-ring widths and δ13C in trees on the southern and northern slopes of the Qilian Mountains,and analysed the relationship between these tree-ring variables and major climatic factors.Tree-ring widths were strongly influenced by climatic factors early in the growing season,and the radial growth in trees on the north-ern slopes was more sensitive to climate than in trees on the southern.Tree-ring δ13C was more sensitive to climate than radial growth.δ13C fractionation was mainly influenced by summer temperature and precipitation early in the growing season.Stomatal conductance more strongly limited stable carbon isotope fractionation in tree rings than photosynthetic rate did.The response between tree rings and climate in mountains gradually weakened as climate warmed.Changes in radial growth and stable carbon isotope fractionation of P.crassifolia in response to climate in the Qilian Mountains may be further complicated by continued climate change.

Key words

Tree rings/Qinghai spruce(Picea crassifolia Kom.)/Stable carbon isotope(δ13C)/Qilian Mountains/Climate change

引用本文复制引用

基金项目

Basic Research Operating Expenses of the Central level Nonprofit Research Institutes(IDM2022003)

National Natural Science Foundation of China(42375054)

Regional collaborative innovation project of Xinjiang(2021E01022)

Regional collaborative innovation project of Xinjiang(2022E01045)

Young Meteorological Talent Program of China Meteorological Administration()

Tianshan Talent Program of Xinjiang(2022TSYCCX0003)

Youth Innovation Team of China Meteorological Administration(CMA2023QN08)

出版年

2024

林业研究(英文版)

东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDEI

影响因子：0.365

ISSN：1007-662X

段落导航