Hydrochemical characteristics of ground ice in permafrost regions of the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Wang, Weihua1,2,3; Wu, Tonghua1; Zhao, Lin1; Li, Ren1; Xie, Changwei1; Qiao, Yongping1; Zhang, Huiwen4; Zhu, Xiaofan1,2; Yang, Shuhua1,2; Qin, Yanhui1,2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 626页码:366-376 |
| 关键词 | Spatial distribution Hydrochemistry Ground ice Permafrost Tibetan Plateau |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2018.01.097 |
| 通讯作者 | Wu, Tonghua(thuawu@lzb.ac.cn) |
| 英文摘要 | Ground ice is a distinctive feature of permafrost terrain. The vertical distribution and factors controlling the hydrochemistry of ground ice are important for studying soil moisture and salt migration during the freeze-thaw process in soil These factors arc also important components of hydrological cycles in cold regions. The hydrochemical characteristics of ground ice on the Qinghai-Tibetan Plateau (QTP) are not well known. We examined the characteristics of ground ice hydrochemistry using data from 9 soil profiles in permafrost regions of the central QTP. The isotopes and anion concentrations of subsurface water on the QTP were higher than those in Arctic polygonal ground regions. The spatial distribution of anions was complex. Well-developed hydrochemical depth gradients occurred within the soil profile. Isotopes decreased and anions increased with depth, suggesting general vertical patterns of soil hydrochemistry across different permafrost regions. Cl- and SO42- concentrations in soil water increased with depth, while NO3- concentration did not change with depth. Freeze-out fractionation, self-purification, and desalination greatly impact soil hydrochemistry. The major factors controlling variation of soil water chemistry were soil moisture, an temperature, and active layer thickness. The results could provide a framework for understanding ground ice origins and the moisture and salt migration pathways in the context of permafrost changes. This information could be useful in developing process-based permafrost hydrologic models. (C) 2018 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | NEAR-SURFACE PERMAFROST ; MACKENZIE DELTA REGION ; SOIL ORGANIC-CARBON ; ACTIVE-LAYER ; MOUNTAINOUS CATCHMENT ; NORTHWEST-TERRITORIES ; CANADA ; CHLORIDE ; RECHARGE ; SIBERIA |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000428194000037 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558151 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wu, Tonghua |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ, Coll Earth Environm Sci, Lanzhou 730000, Gansu, Peoples R China 4.Gansu Desert Control Res Inst, State Key Lab Breeding Base Desertificat & Aeolia, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Weihua,Wu, Tonghua,Zhao, Lin,et al. Hydrochemical characteristics of ground ice in permafrost regions of the Qinghai-Tibet Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,626:366-376. |
| APA | Wang, Weihua.,Wu, Tonghua.,Zhao, Lin.,Li, Ren.,Xie, Changwei.,...&Hao, Junming.(2018).Hydrochemical characteristics of ground ice in permafrost regions of the Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,626,366-376. |
| MLA | Wang, Weihua,et al."Hydrochemical characteristics of ground ice in permafrost regions of the Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 626(2018):366-376. |
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来源：寒区旱区环境与工程研究所
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