The effects of intrinsic water-use efficiency and climate on wood anatomy

被引：0
作者：
Yixue Hong
Xiaohong Liu
J. Julio Camarero
Guobao Xu
Lingnan Zhang
Xiaomin Zeng
Amy Ny Aina Aritsara
Yu Zhang
Wenzhi Wang
Xiaoyu Xing
Qiangqiang Lu
机构：
[1] Shaanxi Normal University,School of Geography and Tourism
[2] Shenzhen Campus of Sun Yat-Sen University,State Key Laboratory of Biocontrol, School of Ecology
[3] Northwest Institute of Eco-Environment and Resources,State Key Laboratory of Cryospheric Science
[4] Chinese Academy of Sciences,State Key Laboratory for Conservation and Utilization of Subtropical Agro
[5] Instituto Pirenaico de Ecología (IPE-CSIC),Bioresources
[6] Guangxi University,The Key Laboratory of Mountain Environment Evolution and Regulation, Institute of Mountain Hazards and Environment
[7] Chinese Academy of Sciences,undefined
[8] Qinling National Botanical Garden,undefined
[9] Xi’an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province),undefined
来源：
International Journal of Biometeorology | 2023年 / 67卷
关键词：
CO; fertilization ; Climate warming; Drought; Tree ring δ; C; Wood anatomy; Temperate forest;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Climate warming may induce growth decline in warm-temperate areas subjected to seasonal soil moisture deficit, whereas increasing atmospheric CO2 concentration (Ca) is expected to enhance tree growth. An accurate understanding of tree growth and physiological processes responding to climate warming and increasing Ca is critical. Here, we analyzed tree-ring stable carbon isotope and wood anatomical traits of Pinus tabuliformis from Qinling Mountains in China to understand how lumen diameter (LD) determining potential hydraulic conductivity and cell-wall thickness (CWT) determining carbon storage responded to climate and Ca. The effects of climate and Ca on intrinsic water-use efficiency (iWUE) were isolated, and iWUE values due to only-climate (iWUEClim) and only-CO2 effects (iWUECO2) were obtained. During a low-iWUE period, the influences of climate on earlywood (EW) LD and latewood (LW) CWT prevailed. During a high-iWUE period, CO2 fertilization promoted cell enlargement and carbon storage but this was counteracted by a negative influence of climate warming. The limiting direct effects of iWUEClim and indirect effects of climate on EW LD were greater than on LW CWT. P. tabuliformis in temperate forests will face a decline of growth and carbon fixation, but will produce embolism-resistant tracheids with narrow lumen responding to future hotter droughts.
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页码：1017 / 1030
页数：13
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