| DOI: | 10.1016/j.gloplacha.2014.10.001
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| 论文题名: | Study on the contribution of cryosphere to runoff in the cold alpine basin: A case study of Hulugou River Basin in the Qilian Mountains |
| 作者: | Zongxing L.; Qi F.; Wei L.; Tingting W.; Aifang C.; Yan G.; Xiaoyan G.; Yanhui P.; Jianguo L.; Rui G.; Bing J.
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| ISSN: | 0921-8418
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| 出版年: | 2014
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| 卷: | 122 | | 起始页码: | 345
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| 结束页码: | 361
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| 语种: | 英语
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| 英文关键词: | China
; Cryosphere
; Hydrograph separation
; Isotope geochemistry
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| Scopus关键词: | Alpine basin
; China
; Cryosphere
; Hydrograph separation
; Isotope geochemistry
; Qilian mountains
; River basins
; alpine environment
; cold region
; cryosphere
; hydrogeochemistry
; hydrograph
; infiltration
; isotopic composition
; meltwater
; rainwater
; runoff
; China
; Gansu
; Heihe Basin
; Qilian Mountains
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| 英文摘要: | Global warming would inevitably lead to the increased glacier-snow meltwater and mountainous discharge. Taking an example the Hulugou River Basin in the Qilian Mountains, this study confirmed the contribution of cryosphere to runoff by means of the isotope hydrograph separation. The hydro-geochemistry and the isotope geochemistry suggested that both the meltwater and rainwater infiltrated into the subsurface and fed into the river runoff of the Hulugou River Basin in the form of springs. The isotopic composition of river water and underground water was close to the Local Meteoric Water Line, and the δ18O and δD ranged among precipitation, glacier-snow meltwater and frozen soil meltwater. The results indicated that 68% of the recharge of the Hulugou River water was the precipitation, thereinto, glacier-snow meltwater and frozen soil meltwater contributing 11% and 21%, respectively. For tributary-1, precipitation accounted for 77% of the total stream runoff, with frozen soil meltwater accounting for 17%, and glacier-snow meltwater only supplied 6%. During the sampling period, the contribution of surface runoff from precipitation was 44% to tributary-2, and glacier-snow meltwater had contributed 42%; only 14% from frozen soil meltwater. For tributary-3, precipitation accounted for 63% of the total runoff, and other 37% originated from the frozen soil meltwater. According to the latest observational data, the glacier-snow meltwater has accounted for 11.36% of the total runoff in the stream outlet, in which the calculation has been verified by hydrograph separation. It is obvious that the contribution of cryosphere has accounted for 1/3 of the outlet runoff in the Hulugou River Basin, which has been an important part of river sources. This study demonstrated that the alpine regions of western China, especially those basins with glaciers, snow and frozen soil, have played a crucial role in regional water resource provision under global warming. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84910050948&doi=10.1016%2fj.gloplacha.2014.10.001&partnerID=40&md5=26d34117a9452fcd4a26e8fda5d15ac9
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11324
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| Appears in Collections: | 全球变化的国际研究计划
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作者单位: | Key Laboratory of Ecohydrology of Inland River Basin Gansu, Hydrology and Water Resources Engineering Research Center, Cold and Arid Region Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
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| Recommended Citation: | |
Zongxing L.,Qi F.,Wei L.,et al. Study on the contribution of cryosphere to runoff in the cold alpine basin: A case study of Hulugou River Basin in the Qilian Mountains[J],2014-01-01,122.
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