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Tree growth and intrinsic water use efficiency of Chinese pine plantations along a precipitation gradient in northern China

文献类型：期刊论文

作者Li, Yuanqiao1,2; Xu, Chenxi3; Huang, Yongmei1,2; Huo, Xinxing1,2; Shi, Fangzhong1,2; Pan, Yingping1,2; Ren, Liang1,2; Wu, Xiuchen1,2
刊名FOREST ECOLOGY AND MANAGEMENT
出版日期2023-01-15
卷号528页码:8
ISSN号0378-1127
关键词Climate change Intrinsic water use efficiency Tree growth Stomatal regulation Chinese pine
DOI10.1016/j.foreco.2022.120609
英文摘要The combined effects of rising temperature, elevated atmospheric CO2 levels and warming-induced droughts have led to an increase in tree intrinsic water use efficiency (iWUE). However, how and to what extent increasing iWUE compensates for tree growth in bioclimatic regions is not well understood. In this study, nine tree ring sampling sites of Chinese pine (Pinus tabulaeformis) plantations were selected along a precipitation gradient to explore the different contributions of iWUE to tree growth. The results showed that the coefficient of variation of tree ring chronology (TRIcv) decreased significantly with the precipitation gradient. There was a significant increasing trend in iWUE over time at all sites, the rate of which decreased with the precipitation gradient. Tree growth in drier regions was positively correlated with the drought index, and TRIcv showed an increasing trend as tree grew, which implies that tree growth in drier regions is unstable under the rapidly changing climate. At the three drier sites, drought was the dominant factor inducing increased iWUE, and iWUE explained between 17.51%, and 38.35% of tree growth. At the two wetter sites, there was a significant positive relationship between iWUE and temperature, and iWUE explained 18.61% and 12.10% of tree growth, respectively. Under dry conditions, the drier sites exhibited greater levels of reduced tree growth and maintained higher relative iWUE to adapt to the water deficit compared to other sites. Our results highlight that stomatal regulation has a critical role in maintaining tree growth and increasing iWUE could compensate for negative effects from drought in arid environments.
WOS关键词CARBON-ISOTOPE DISCRIMINATION ; CONTRASTING GROWTH ; EUROPEAN FORESTS ; STABLE-ISOTOPES ; SAP FLOW ; DROUGHT ; MORTALITY ; FRACTIONATION ; MECHANISMS ; STRATEGIES
资助项目National Natural Science Foundation of China ; [41922001] ; [42171050]
WOS研究方向Forestry
语种英语
出版者ELSEVIER
WOS记录号WOS:000897725500006
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/106965]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Wu, Xiuchen
作者单位1.Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
2.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yuanqiao,Xu, Chenxi,Huang, Yongmei,et al. Tree growth and intrinsic water use efficiency of Chinese pine plantations along a precipitation gradient in northern China[J]. FOREST ECOLOGY AND MANAGEMENT,2023,528:8.
APA Li, Yuanqiao.,Xu, Chenxi.,Huang, Yongmei.,Huo, Xinxing.,Shi, Fangzhong.,...&Wu, Xiuchen.(2023).Tree growth and intrinsic water use efficiency of Chinese pine plantations along a precipitation gradient in northern China.FOREST ECOLOGY AND MANAGEMENT,528,8.
MLA Li, Yuanqiao,et al."Tree growth and intrinsic water use efficiency of Chinese pine plantations along a precipitation gradient in northern China".FOREST ECOLOGY AND MANAGEMENT 528(2023):8.

入库方式： OAI收割

来源：地质与地球物理研究所

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