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DOI | 10.1016/j.agrformet.2020.108294 |
A Study on the Hydrothermal Regime of Aeolian Sand and the Underlying Soil in the Frozen Soil Zone on the Qinghai-Tibetan Plateau | |
Wang L.; Jiang G.; Fu Z.; Liu Y.; Gao S.; Zhao H.; Wu Q. | |
发表日期 | 2021 |
ISSN | 1681923 |
卷号 | 298-299 |
英文摘要 | The hydrothermal process within the aeolian sand layer on the Qinghai-Tibetan Plateau (QTP) plays a key role in understanding the interaction between desertification and underlying frozen soil. However, little is known about the hydrothermal dynamics of aeolian sand and underling soil layer in the frozen soil zone on the QTP. In this study, a sparse vegetation cover site and three aeolian sand cover sites with different sand thicknesses were established to study the hydrothermal dynamics within aeolian sand layer. The results show that the thickness of aeolian sand is critical in the soil hydrothermal process under sand cover. The increase in thickness of the aeolian sand layer resulted in an advance in the onset of the freezing and thawing of soil, and accelerated movement of the freezing and thawing front. In addition, the increase in sand thickness caused an increase in soil temperature during the thawing stage and the warming period of the thawed stage, whereas a decrease occurred during the cooling period of the thawed stage, the freezing stage and the frozen stage, which ultimately caused the enlargement of the annual range of ground temperature. Furthermore, in the study area, the actual evapotranspiration of sand-covered surface was larger than that of the naked surface. The water content also decreased with increasing sand thickness in different stages, which separately decreased the heat budget in both the warm and cold season because of the smaller thermal conductivity of aeolian sand with a lower water content. This study states that through the special hydrothermal process, have an adverse impact on the occurrence and formation of the frozen soil in the QTP. © 2020 |
英文关键词 | aeolian sand; desertification; frozen soil; heat budget; hydrothermal dynamic |
语种 | 英语 |
scopus关键词 | Agricultural and Forest Meteorology |
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/158264 |
作者单位 | State Key Laboratory of Frozen soil Engineering; Northwest Institute of Eco-Environment and Resources; Chinese Academy of Sciences; Lanzhou; 730000; China; University of Chinese Academy of SciencesBeijing 100049; China; Beiluhe Observation Station of Frozen Soil Environment and Engineering; Northwest Institute of Eco-environment and Resources; Chinese Academy of Sciences; Lanzhou; 730000; China |
推荐引用方式 GB/T 7714 | Wang L.,Jiang G.,Fu Z.,et al. A Study on the Hydrothermal Regime of Aeolian Sand and the Underlying Soil in the Frozen Soil Zone on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,298-299. |
APA | Wang L..,Jiang G..,Fu Z..,Liu Y..,Gao S..,...&Wu Q..(2021).A Study on the Hydrothermal Regime of Aeolian Sand and the Underlying Soil in the Frozen Soil Zone on the Qinghai-Tibetan Plateau.,298-299. |
MLA | Wang L.,et al."A Study on the Hydrothermal Regime of Aeolian Sand and the Underlying Soil in the Frozen Soil Zone on the Qinghai-Tibetan Plateau".298-299(2021). |
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