Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China
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 r...
Published in: | Journal of Geophysical Research: Atmospheres |
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Language: | English |
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Online Access: | http://ir.imde.ac.cn/handle/131551/19038 https://doi.org/10.1002/2017JD026660 |
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/19038 2023-05-15T17:57:21+02:00 Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China Liu, Xiaohong Zhang, Xuanwen Zhao, Liangju Xu, Guobao Wang, Lixin Sun, Weizhen Zhang, Qiuliang Wang, Wenzhi Zeng, Xiaomin Wu, Guoju 2017-07-16 http://ir.imde.ac.cn/handle/131551/19038 https://doi.org/10.1002/2017JD026660 英语 eng AMER GEOPHYSICAL UNION JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Xiaohong Liu,Xuanwen Zhang,Liangju Zhao,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. http://ir.imde.ac.cn/handle/131551/19038 doi:10.1002/2017JD026660 Science & Technology Physical Sciences Meteorology & Atmospheric Sciences OXYGEN-ISOTOPE RATIOS VAPOR-PRESSURE DEFICIT STABLE-ISOTOPES MODERN PRECIPITATION NORTHWESTERN CHINA TIBETAN PLATEAU FOREST CLIMATE TEMPERATURE CELLULOSE Article 期刊论文 2017 ftchinacadscimhe https://doi.org/10.1002/2017JD026660 2022-12-19T18:20:15Z 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. Article in Journal/Newspaper permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Journal of Geophysical Research: Atmospheres 122 13 6697 6712 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Science & Technology Physical Sciences Meteorology & Atmospheric Sciences OXYGEN-ISOTOPE RATIOS VAPOR-PRESSURE DEFICIT STABLE-ISOTOPES MODERN PRECIPITATION NORTHWESTERN CHINA TIBETAN PLATEAU FOREST CLIMATE TEMPERATURE CELLULOSE |
spellingShingle |
Science & Technology Physical Sciences Meteorology & Atmospheric Sciences OXYGEN-ISOTOPE RATIOS VAPOR-PRESSURE DEFICIT STABLE-ISOTOPES MODERN PRECIPITATION NORTHWESTERN CHINA TIBETAN PLATEAU FOREST CLIMATE TEMPERATURE CELLULOSE Liu, Xiaohong Zhang, Xuanwen Zhao, Liangju Xu, Guobao Wang, Lixin Sun, Weizhen Zhang, Qiuliang Wang, Wenzhi Zeng, Xiaomin Wu, Guoju Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
topic_facet |
Science & Technology Physical Sciences Meteorology & Atmospheric Sciences OXYGEN-ISOTOPE RATIOS VAPOR-PRESSURE DEFICIT STABLE-ISOTOPES MODERN PRECIPITATION NORTHWESTERN CHINA TIBETAN PLATEAU FOREST CLIMATE TEMPERATURE CELLULOSE |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Liu, Xiaohong Zhang, Xuanwen Zhao, Liangju Xu, Guobao Wang, Lixin Sun, Weizhen Zhang, Qiuliang Wang, Wenzhi Zeng, Xiaomin Wu, Guoju |
author_facet |
Liu, Xiaohong Zhang, Xuanwen Zhao, Liangju Xu, Guobao Wang, Lixin Sun, Weizhen Zhang, Qiuliang Wang, Wenzhi Zeng, Xiaomin Wu, Guoju |
author_sort |
Liu, Xiaohong |
title |
Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
title_short |
Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
title_full |
Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
title_fullStr |
Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
title_full_unstemmed |
Tree ring delta O-18 reveals no long-term change of atmospheric water demand since 1800 in the northern Great Hinggan Mountains, China |
title_sort |
tree ring delta o-18 reveals no long-term change of atmospheric water demand since 1800 in the northern great hinggan mountains, china |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2017 |
url |
http://ir.imde.ac.cn/handle/131551/19038 https://doi.org/10.1002/2017JD026660 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Xiaohong Liu,Xuanwen Zhang,Liangju Zhao,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. http://ir.imde.ac.cn/handle/131551/19038 doi:10.1002/2017JD026660 |
op_doi |
https://doi.org/10.1002/2017JD026660 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
122 |
container_issue |
13 |
container_start_page |
6697 |
op_container_end_page |
6712 |
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1766165765974654976 |