Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China
文献类型：期刊论文
| 作者 | Liu, Xiaohong1,2; Zhang, Xuanwen2,3; Zhao, Liangju4; Xu, Guobao2; Wang, Lixin5; Sun, Weizhen2; Zhang, Qiuliang6; Wang, Wenzhi7 ; Zeng, Xiaomin2,3; Wu, Guoju2,3
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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| 出版日期 | 2017-07-16 |
| 卷号 | 122期号:13页码:6697-6712 |
| ISSN号 | 2169-897X |
| 关键词 | Oxygen-isotope Ratios Vapor-pressure Deficit Stable-isotopes Modern Precipitation Northwestern China Tibetan Plateau Forest Climate Temperature Cellulose |
| DOI | 10.1002/2017JD026660 |
| 通讯作者 | Xiaohong Liu |
| 英文摘要 | Global warming will significantly increase transpirational water demand, which could dramatically affect plant physiology and carbon and water budgets. Tree ring delta O-18 is a potential index of the leaf-to-air vapor-pressure deficit (VPD) and therefore has great potential for long-term climatic reconstruction. Here we developed delta O-18 chronologies of two dominant native trees, Dahurian larch (Larix gmelinii Rupr.) and Mongolian pine (Pinus sylvestris var. mongolica), from a permafrost region in the Great Hinggan Mountains of northeastern China. We found that the July-August VPD and relative humidity were the dominant factors that controlled tree ring delta O-18 in the study region, indicating strong regulation of stomatal conductance. Based on the larch and pine tree ring delta O-18 chronologies, we developed a reliable summer (July-August) VPD reconstruction since 1800. Warming growing season temperatures increase transpiration and enrich cellulose O-18, but precipitation seemed to be the most important influence on VPD changes in this cold region. Periods with stronger transpirational demand occurred around the 1850s, from 1914 to 1925, and from 2005 to 2010. However, we found no overall long-term increasing or decreasing trends for VPD since 1800, suggesting that despite the increasing temperatures and thawing permafrost throughout the region, forest transpirational demand has not increased significantly during the past two centuries. Under current climatic conditions, VPD did not limit growth of larch and pine, even during extremely drought years. Our findings will support more realistic evaluations and reliable predictions of the potential influences of ongoing climatic change on carbon and water cycles and on forest dynamics in permafrost regions. |
| 语种 | 英语 |
| WOS记录号 | WOS:000407900300001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/19038]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 4.Northwest Univ, Coll Urban & Environm Sci, Xian, Shaanxi, Peoples R China 5.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA 6.Inner Mongolia Agr Univ, Coll Forestry, Hohhot, Peoples R China 7.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiaohong,Zhang, Xuanwen,Zhao, Liangju,et al. Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(13):6697-6712. |
| APA | Liu, Xiaohong.,Zhang, Xuanwen.,Zhao, Liangju.,Xu, Guobao.,Wang, Lixin.,...&Wu, Guoju.(2017).Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(13),6697-6712. |
| MLA | Liu, Xiaohong,et al."Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.13(2017):6697-6712. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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