Exploring the ground ice recharge near permafrost table on the central Qinghai-Tibet Plateau using chemical and isotopic data
文献类型：期刊论文
| 作者 | Wang, Weihua1,2,3; Wu, Tonghua1; Zhao, Lin1; Li, Ren1; Zhu, Xiaofan1,3; Wang, Wanrui2; Yang, Shuhua1,3; Qin, Yanhui1,3; Hao, Junmin1,3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 560页码:220-229 |
| 关键词 | Hydrogeochemistry Ground ice Recharge Permafrost table Qinghai-Tibet Plateau |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2018.03.032 |
| 通讯作者 | Wu, Tonghua(thuawu@lzb.ac.cn) |
| 英文摘要 | Thawing permafrost on the Qinghai-Tibet Plateau (QTP) has great impacts on the local hydrological process by way of causing ground ice to thaw. Until now there is little knowledge on ground ice hydrology near permafrost table under a warming climate. This study applied stable tracers (isotopes and chloride) and hydrograph separation model to quantify the sources of ground ice near permafrost table in continuous permafrost regions of the central QTP. The results indicated that the ground ice near permafrost table was mainly supplied by active layer water and permafrost water, accounting for 58.9 to 87.0% and 13.0 to 41.1%, respectively, which implying that the active layer was the dominant source. The contribution rates from the active layer to the ground ice in alpine meadow (59 to 69%) was less than that in alpine steppe (70 to 87%). It showed well-developed hydrogeochemical depth gradients, presenting depleted isotopes and positive chemical gradients with depth within the soil layer. The effects of evaporation and freeze-out fractionation on the soil water and ground ice were evident. The results provide additional insights into ground ice sources and cycling near permafrost table in permafrost terrain, and would be helpful for improving process-based detailed hydrologic models under the occurring global warming. (C) 2018 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | ACTIVE LAYER ; HYDROGRAPH SEPARATIONS ; STABLE-ISOTOPES ; SOIL-MOISTURE ; HYDROLOGY ; CANADA ; RIVER ; PRECIPITATION ; DEGRADATION ; TEMPERATURE |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000430882300017 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557847 |
| 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, State Key Lab Cryosphere Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Weihua,Wu, Tonghua,Zhao, Lin,et al. Exploring the ground ice recharge near permafrost table on the central Qinghai-Tibet Plateau using chemical and isotopic data[J]. JOURNAL OF HYDROLOGY,2018,560:220-229. |
| APA | Wang, Weihua.,Wu, Tonghua.,Zhao, Lin.,Li, Ren.,Zhu, Xiaofan.,...&Hao, Junmin.(2018).Exploring the ground ice recharge near permafrost table on the central Qinghai-Tibet Plateau using chemical and isotopic data.JOURNAL OF HYDROLOGY,560,220-229. |
| MLA | Wang, Weihua,et al."Exploring the ground ice recharge near permafrost table on the central Qinghai-Tibet Plateau using chemical and isotopic data".JOURNAL OF HYDROLOGY 560(2018):220-229. |
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来源：寒区旱区环境与工程研究所
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