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

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外文摘要：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.

外文关键词：

Tree ringsQinghai spruce(Picea crassifolia Kom.)Stable carbon isotope(δ13C)Qilian MountainsClimate change

作者：

Li Qin、Huaming Shang、Weiping Liu、Yuting Fan、Kexiang Liu、Tongwen Zhang、Ruibo Zhang

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作者单位：

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

Xinjiang Meteorological Information Center,Ürümqi 830002,People's Republic of China

基金：

Basic Research Operating Expenses of the Central level Nonprofit Research InstitutesNational Natural Science Foundation of ChinaRegional collaborative innovation project of XinjiangRegional collaborative innovation project of XinjiangYoung Meteorological Talent Program of China Meteorological AdministrationTianshan Talent Program of XinjiangYouth Innovation Team of China Meteorological Administration

项目编号：

IDM2022003423750542021E010222022E010452022TSYCCX0003CMA2023QN08

出版年：

2024

DOI：

10.1007/s11676-024-01711-z

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

年,卷(期)：2024.35(3)