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DOI	10.1016/j.applthermaleng.2017.12.018
	Hydrothermal variation and its influence on the desertified ground surface of Qinghai-Tibet Plateau
	Xie, Shengbo; Qu, Jianjun; Zhang, Kecun; Mu, Yanhu; Xu, Xiangtian; Pang, Yingjun; Wang, Tao
发表日期	2018
ISSN	1359-4311
卷号	131
英文摘要	Blown sand activities in Qinghai-Tibet Plateau are strong and desertified lands are widely distributed. Variation of hydrothermal conditions after ground surface desertifies in permafrost regions currently remains unclear. The variations of water content and thermal flux of the desertified ground surface were thus investigated by synchronization contrast observation of the locale field. Results show that water content decreased after the ground surface of Qinghai-Tibet Plateau desertified, especially at the surface depth of 0.05 m. The annual average water content decreased by nearly half. As the soil of desertified ground surface became coarse, water storage and water retention capacities simultaneously weakened. With the high permeability coefficient, the water holding capacity and thermal conductivity of sand layer decreased, thus causing the decrease of thermal flux on the sand layer. The heat conducted through the sand layer to the underground decreased, which can prevent the permafrost from warming and thawing and is therefore beneficial to delaying permafrost degradation. (C) 2017 Elsevier Ltd. All rights reserved.
关键词	Desertification Water content Thermal flux Qinghai-Tibet Plateau
学科领域	Thermodynamics; Energy & Fuels; Engineering; Mechanics
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
来源期刊	APPLIED THERMAL ENGINEERING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111972
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xie, Shengbo,Qu, Jianjun,Zhang, Kecun,et al. Hydrothermal variation and its influence on the desertified ground surface of Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2018,131.
APA	Xie, Shengbo.,Qu, Jianjun.,Zhang, Kecun.,Mu, Yanhu.,Xu, Xiangtian.,...&Wang, Tao.(2018).Hydrothermal variation and its influence on the desertified ground surface of Qinghai-Tibet Plateau.APPLIED THERMAL ENGINEERING,131.
MLA	Xie, Shengbo,et al."Hydrothermal variation and its influence on the desertified ground surface of Qinghai-Tibet Plateau".APPLIED THERMAL ENGINEERING 131(2018).