Baseflow characteristics in alpine rivers - a multi-catchment analysis in Northwest China
文献类型：SCI/SSCI论文
| 作者 | Gan R.; Sun, L.; Luo, Y. |
| 发表日期 | 2015 |
| 关键词 | Baseflow index Recession constant Snowmelt Glacier melt Streamflow regional estimation separation methods conceptual-model flow separation water-balance basin regression streamflow index discharge |
| 英文摘要 | As a component of streamflow, baseflow is critical for regulating seasonal distribution of river flows and stabilizing water supplies. Water resources in the arid area of Northwest China are mainly from multiple catchments in the alpine that could be influenced by varieties of climatic, land cover, soil and geological factors. While numerous studies have been done on streamflow, systematic analysis of baseflow in the alpine river systems is scare. Based on historical daily streamflow data and the automated digital filter method of baseflow separation, this study investigated characteristics of hydrographs of overland flow, streamflow and baseflow of river systems fed by rainfall, snowmelt, glacier melt or mixtures of these. This study also calculated the recession constants and baseflow indices of 65 river systems. While the recession constant was 0.0034-0.0728 with a mean of 0.018, the baseflow index was 0.27-0.79 with a mean of 0.57. Further, Spearman's correlation analysis showed that the baseflow index was significantly correlated with catchment climatic factors (e.g., precipitation and temperature), topographic factors (e.g., elevation and slope) and aquifer properties represented by the recession constant. Multiple regression analysis indicated that the factors explained 65% of the variability of baseflow index in the study area. |
| 出处 | Journal of Mountain Science |
| 卷 | 12 |
| 期 | 3 |
| 页 | 614-625 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1672-6316 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38614]  |
| 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 | Gan R.,Sun, L.,Luo, Y.. Baseflow characteristics in alpine rivers - a multi-catchment analysis in 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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