Arid
DOI10.1016/j.coldregions.2013.03.003
Monitoring and modeling the influence of snow pack and organic soil on a permafrost active layer, Qinghai-Tibetan Plateau of China
Zhou, Jian1; Kinzelbach, Wolfgang2; Cheng, Guodong1; Zhang, Wei3; He, Xiaobo1; Ye, Bosheng1
通讯作者Zhou, Jian
来源期刊COLD REGIONS SCIENCE AND TECHNOLOGY
ISSN0165-232X
EISSN1872-7441
出版年2013
卷号90-91页码:38-52
英文摘要

As a result of global warming, the depth of the permafrost active layer on the Qinghai-Tibet Plateau (QTP) has been increasing progressively during the past few decades. The Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, established the Binggou and Tanggula research stations on the QTP to monitor the impacts of snow pack and tundra soil on the permafrost active layer. In order to reproduce active layer dynamics in the present climate, the CoupModel, which calculates vertical heat and water processes in a soil-snow-atmosphere system, was successfully adjusted and applied. for the two research stations. Subsequently, the calibrated model was used to provide an evaluation of the potential response of the active layer to different scenarios of climate warming and precipitation increase at Binggou station. The results reveal: C) the soil freezes deeper for snow depths less than 20 cm in the present climate, compared to the situation without snow cover. Increased albedo, due to shallow snow cover, reduces the absorption of solar irradiation and decreases soil temperature. However, this positive effect is lost with increasing precipitation and snow depth in winter. The decrease of simulated cumulative ground heat flux in winter along with thicker snow depth indicates that the thicker snow pack gradually insulates the subsoil against energy losses to the atmosphere in winter, which induces a reduction of active layer frozen depth. C) The model predicted an increase of maximum active layer thawing depth from today 150 cm to about 350 cm as a result of a 4 degrees C warming and a talik formation at the top of the permafrost as a result of a 6 degrees C warming. The other investigation concerns the influence of organic soil layer depth on the active layer at Tanggula station. The model results reveal that the maximum thawing depth of the active layer in summer gradually decreases along with the increase of the soil organic layer depth. The maximum thawing depth is close to 300 cm when ignoring the organic layer, while it is about 150 cm with a realistic organic layer of 40 cm depth. The results reveal that the organic layer provides a protection against active layer deepening in summer. Therefore, both the roles of snow and organic soil are of importance for the behavior of permafrost under climate warming conditions. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.


英文关键词Qinghai-Tibetan Plateau Active layer Organic soil Snow pack CoupModel
类型Article
语种英语
国家Peoples R China ; Switzerland
收录类别SCI-E
WOS记录号WOS:000319234700006
WOS关键词THERMAL REGIME ; FREEZE-THAW ; TEMPERATURE ; FROZEN ; COVER ; CONSTRUCTION ; CALIBRATION ; VEGETATION ; CLIMATE ; CYCLES
WOS类目Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS研究方向Engineering ; Geology
来源机构兰州大学 ; 中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176479
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China;
2.ETH, Inst Environm Engn, CH-8093 Zurich, Switzerland;
3.Lanzhou Univ, Resources & Environm Inst, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Jian,Kinzelbach, Wolfgang,Cheng, Guodong,et al. Monitoring and modeling the influence of snow pack and organic soil on a permafrost active layer, Qinghai-Tibetan Plateau of China[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2013,90-91:38-52.
APA Zhou, Jian,Kinzelbach, Wolfgang,Cheng, Guodong,Zhang, Wei,He, Xiaobo,&Ye, Bosheng.(2013).Monitoring and modeling the influence of snow pack and organic soil on a permafrost active layer, Qinghai-Tibetan Plateau of China.COLD REGIONS SCIENCE AND TECHNOLOGY,90-91,38-52.
MLA Zhou, Jian,et al."Monitoring and modeling the influence of snow pack and organic soil on a permafrost active layer, Qinghai-Tibetan Plateau of China".COLD REGIONS SCIENCE AND TECHNOLOGY 90-91(2013):38-52.
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