Streamflow variation due to glacier melting and climate change in upstream Heihe River Basin, Northwest China
文献类型：SCI/SSCI论文
| 作者 | Wu F.; Zhan, J. Y.; Wang, Z.; Zhang, Q. |
| 发表日期 | 2015 |
| 关键词 | Streamflow simulation Glacier melting Snowmelt Water balance Hydrological model hydrological response water-resources warming climate swat model blue water runoff simulation impact region flows |
| 英文摘要 | Streamflow simulation is often challenging in mountainous watersheds because of incomplete hydrological models, irregular topography, immeasurable snowpack or glacier, and low data resolution. In this study, a semi-distributed conceptual hydrological model (SWAT-Soil Water Assessment Tool) coupled with a glacier melting algorithm was applied to investigate the sensitivity of streamflow to climatic and glacial changes in the upstream Heihe River Basin. The glacier mass balance was calculated at daily time-step using a distributed temperature-index melting and accumulation algorithm embedded in the SWAT model. Specifically, the model was calibrated and validated using daily streamflow data measured at Yingluoxia Hydrological Station and decadal ice volume changes derived from survey maps and remote sensing images between 1960 and 2010. This study highlights the effects of glacier melting on streamflow and their future changes in the mountainous watersheds. We simulate the contribution of glacier melting to streamflow change under different scenarios of climate changes in terms of temperature and precipitation dynamics. The rising temperature positively contributed to streamflow due to the increase of snowmelt and glacier melting. The rising precipitation directly contributes to streamflow and it contributed more to streamflow than the rising temperature. The results show that glacial meltwater has contributed about 3.25 billion m(3) to streamflow during 1960-2010. However, the depth of runoff within the watershed increased by about 2.3 mm due to the release of water from glacial storage to supply the intensified evapotranspiration and infiltration. The simulation results indicate that the glacier made about 8.9% contribution to streamflow in 2010. The research approach used in this study is feasible to estimate the glacial contribution to streamflow in other similar mountainous watersheds elsewhere. (C) 2014 Elsevier Ltd. All rights reserved. |
| 出处 | Physics and Chemistry of the Earth |
| 卷 | 79-82 |
| 页 | 11-19 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1474-7065 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38953]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Wu F.,Zhan, J. Y.,Wang, Z.,et al. Streamflow variation due to glacier melting and climate change in upstream Heihe River Basin, Northwest China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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