| DOI | 10.1016/j.geoderma.2021.115083
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| Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau |
| Zhao, Lin; Hu, Guojie; Wu, Xiaodong; Wu, Tonghua ; Li, Ren; Pang, Qiangqiang; Zou, Defu; Du, Erji; Zhu, Xiaofan
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| 通讯作者 | Hu, GJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Peoples R China.
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| 发表日期 | 2021
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| ISSN | 0016-7061
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| EISSN | 1872-6259
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| 卷号 | 400 |
| 英文摘要 | Hydro-thermal characteristics of the active layer are critical during freezing-thawing cycles, causing the moisture and heat exchanges between both permafrost and atmosphere in permafrost regions. There is better understanding of these characteristics in high-latitude permafrost areas, while comparatively little is known in the middle-low latitude areas. Here, we used field monitoring data along with statistical models to quantitatively analyze the hydro-thermal dynamics of the freezing-thawing processes at the Tanggula (TGL) site in permafrost regions of Qinghai-Tibetan Plateau (QTP). This combined approach was used to examine the hydro-thermal characteristics in high-altitude permafrost regions. Our results revealed that the duration of the freezing process was much shorter than that of the thawing process. During freezing-thawing processes, the amplitude variation in soil temperature had a significant logarithmic relationship with depth. There was a significant exponential relationship between soil water content at a depth of 5 cm and monthly precipitation. The averaged energy in the active layer consumed for phase change from water to ice was 145.53 MJ/m(2). Finally, we analyzed the quantitative hydro-thermal characteristics and influential factors during the freezing and thawing processes; the different hydro-thermal processes occurring in high-altitude permafrost regions were compared with those in high latitude permafrost regions. Collectively, these results offer a perspective on the difference in permafrost across different region and also provide a reference for the parameterization of land surface models. |
| 关键词 | THERMAL REGIMEPERMAFROST PROPERTIESORGANIC-MATTERCOASTAL-PLAINFROZEN SOILDECOMPOSITIONVARIABILITYPATTERNSGRADIENTIMPACTS |
| 英文关键词 | Soil temperature; Soil water content; Active layer; Permafrost; Tibetan Plateau |
| 语种 | 英语
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| WOS研究方向 | Agriculture
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| WOS类目 | Soil Science
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| WOS记录号 | WOS:000659471100003
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| 来源期刊 | GEODERMA
(IF:4.336[JCR-2018],4.564[5-Year]) |
| 来源机构 | 中国科学院西北生态环境资源研究院
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| 文献类型 | 期刊论文
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| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/254094
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| 作者单位 | [Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; [Hu, Guojie; Wu, Xiaodong; Wu, Tonghua; Li, Ren; Pang, Qiangqiang; Zou, Defu; Du, Erji; Zhu, Xiaofan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Peoples R China; [Wu, Tonghua] Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China
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推荐引用方式
GB/T 7714 |
Zhao, Lin,Hu, Guojie,Wu, Xiaodong,et al. Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,400.
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| APA |
Zhao, Lin.,Hu, Guojie.,Wu, Xiaodong.,Wu, Tonghua.,Li, Ren.,...&Zhu, Xiaofan.(2021).Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau.GEODERMA,400.
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| MLA |
Zhao, Lin,et al."Dynamics and characteristics of soil temperature and moisture of active layer in the central Tibetan Plateau".GEODERMA 400(2021).
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