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CO2 Fertilization Confounds Tree-Ring Records of Regional Hydroclimate at Northeastern Qinghai-Tibetan Plateau

文献类型：期刊论文

作者Wang, Wenzhi1,2,3; Liu, Xiaohong2,4; Xu, Guobao2; Treydte, Kerstin5; Shao, Xuemei6; Qin, Dahe2; Wang, Genxu1; McDowell, Nate G.3
刊名EARTH AND SPACE SCIENCE
出版日期2019-05-01
卷号6期号:5页码:730-740
ISSN号2333-5084
DOI10.1029/2018EA000529
通讯作者Liu, Xiaohong(xhliu@snnu.edu.cn)
英文摘要Understanding historical hydroclimate change during the last millennium is of fundamental importance for forecasting and evaluating the regional hydrologic cycle and water security under global warming. Here we compared observations of tree-ring stable isotope ratios (delta C-13 and delta O-18), tree-ring widths, lake sediments estimates of regional hydroclimate, and glacier advance and retreat for northeastern Qinghai-Tibetan Plateau, China. The hydroclimate dynamics in our composite isotope record is similar to that derived from the juniper tree-ring widths throughout the last millennium until the latter half of the twentieth century, after which they diverged with the tree-ring widths indicating an unprecedented wet period while the isotopic results, sediment proxies, and glaciers demonstrated a drying pattern. Rising atmospheric CO2 promoted increases in canopy-scale intrinsic water-use efficiency and growth, causing tree-ring widths to overestimate the regional hydroclimate signal in the growth record. Thus, our study suggests that CO2 fertilization over the last century may confound hydroclimate reconstructions inferred from juniper tree-ring width at northeastern Qinghai-Tibetan Plateau, which may cause overestimates of water resources. Correction for CO2-induced changes in tree-ring widths may be necessary to accurately utilize tree rings for paleoclimate reconstructions.
WOS关键词WATER-USE EFFICIENCY ; CARBON-ISOTOPE DISCRIMINATION ; STABLE-ISOTOPES ; GROWTH ; FOREST ; PINE ; TEMPERATURE ; CHRONOLOGIES ; DIOXIDE ; PRECIPITATION
资助项目National Natural Science Foundation of China[41571196] ; National Natural Science Foundation of China[41601206] ; National Natural Science Foundation of China[41721091] ; State Key Laboratory of Cryospheric Sciences[SKLCS-OP-2016-07] ; China Postdoctoral Science Foundation[2015LH0005] ; China Postdoctoral Science Foundation[2016M592713] ; CAS Light of West China Program ; Youth Foundation of the Institute of Mountain Hazards and Environment, CAS ; Fundamental Research Funds for the Central Universities[GK201801007] ; China Scholarship Council ; LDRD program from Pacific Northwest National Laboratory
WOS研究方向Astronomy & Astrophysics ; Geology
语种英语
WOS记录号WOS:000472560700005
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; State Key Laboratory of Cryospheric Sciences ; China Postdoctoral Science Foundation ; CAS Light of West China Program ; Youth Foundation of the Institute of Mountain Hazards and Environment, CAS ; Fundamental Research Funds for the Central Universities ; China Scholarship Council ; LDRD program from Pacific Northwest National Laboratory
源URL[http://ir.imde.ac.cn/handle/131551/26509]  
专题中国科学院水利部成都山地灾害与环境研究所
通讯作者Liu, Xiaohong
作者单位1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu, Sichuan, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China
3.Pacific Northwest Natl Lab, Richland, WA 99352 USA
4.Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Shaanxi, Peoples R China
5.Swiss Fed Res Inst WSL, Dendro Sci Grp, Birmensdorf, Switzerland
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Wenzhi,Liu, Xiaohong,Xu, Guobao,et al. CO2 Fertilization Confounds Tree-Ring Records of Regional Hydroclimate at Northeastern Qinghai-Tibetan Plateau[J]. EARTH AND SPACE SCIENCE,2019,6(5):730-740.
APA Wang, Wenzhi.,Liu, Xiaohong.,Xu, Guobao.,Treydte, Kerstin.,Shao, Xuemei.,...&McDowell, Nate G..(2019).CO2 Fertilization Confounds Tree-Ring Records of Regional Hydroclimate at Northeastern Qinghai-Tibetan Plateau.EARTH AND SPACE SCIENCE,6(5),730-740.
MLA Wang, Wenzhi,et al."CO2 Fertilization Confounds Tree-Ring Records of Regional Hydroclimate at Northeastern Qinghai-Tibetan Plateau".EARTH AND SPACE SCIENCE 6.5(2019):730-740.

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来源：成都山地灾害与环境研究所

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