Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Gao, Bing1; Yang, Dawen2; Qin, Yue2; Wang, Yuhan2; Li, Hongyi3; Zhang, Yanlin3; Zhang, Tingjun4 |
| 刊名 | CRYOSPHERE
 |
| 出版日期 | 2018-02-23 |
| 卷号 | 12期号:2页码:657-673 |
| ISSN号 | 1994-0416 |
| DOI | 10.5194/tc-12-657-2018 |
| 通讯作者 | Yang, Dawen(yangdw@tsinghua.edu.cn) |
| 英文摘要 | Frozen ground has an important role in regional hydrological cycles and ecosystems, particularly on the Qinghai-Tibetan Plateau (QTP), which is characterized by high elevations and a dry climate. This study modified a distributed, physically based hydrological model and applied it to simulate long-term (1971-2013) changes in frozen ground its the effects on hydrology in the upper Heihe basin, northeastern QTP. The model was validated against data obtained from multiple ground-based observations. Based on model simulations, we analyzed spatio-temporal changes in frozen soils and their effects on hydrology. Our results show that the area with permafrost shrank by 8.8 % (approximately 500 km(2)), predominantly in areas with elevations between 3500 and 3900 m. The maximum depth of seasonally frozen ground decreased at a rate of approximately 0.032 m decade(-1), and the active layer thickness over the permafrost increased by approximately 0.043 m decade(-1). Runoff increased significantly during the cold season (November-March) due to an increase in liquid soil moisture caused by rising soil temperatures. Areas in which permafrost changed into seasonally frozen ground at high elevations showed especially large increases in runoff. Annual runoff increased due to increased precipitation, the base flow increased due to changes in frozen soils, and the actual evapotranspiration increased significantly due to increased precipitation and soil warming. The groundwater storage showed an increasing trend, indicating that a reduction in permafrost extent enhanced the groundwater recharge. |
| 收录类别 | SCI |
| WOS关键词 | WATER-BALANCE MODEL ; RIVER-BASIN ; CLIMATE-CHANGE ; THERMAL REGIMES ; COLD REGIONS ; PERMAFROST ; CHINA ; HEAT ; PARAMETERIZATION ; DEGRADATION |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| WOS记录号 | WOS:000426010300002 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558095 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yang, Dawen |
| 作者单位 | 1.China Univ Geosci, Sch Water Resources & Environm, Beijing 100083, Peoples R China 2.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 4.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab West Chinas Environm Syst MOE, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Bing,Yang, Dawen,Qin, Yue,et al. Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai-Tibetan Plateau[J]. CRYOSPHERE,2018,12(2):657-673. |
| APA | Gao, Bing.,Yang, Dawen.,Qin, Yue.,Wang, Yuhan.,Li, Hongyi.,...&Zhang, Tingjun.(2018).Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai-Tibetan Plateau.CRYOSPHERE,12(2),657-673. |
| MLA | Gao, Bing,et al."Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai-Tibetan Plateau".CRYOSPHERE 12.2(2018):657-673. |
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