Baseflow characteristics in alpine rivers - a multi-catchment analysis in Northwest China
Gan, R; Sun, L; Luo, Y
2015
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume12Issue:3Pages:614-625
AbstractAs 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.
SubtypeJournal
KeywordBaseflow index Recession constant Snowmelt Glacier melt Streamflow
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordREGIONAL ESTIMATION ; SEPARATION METHODS ; CONCEPTUAL-MODEL ; FLOW SEPARATION ; WATER-BALANCE ; BASIN ; REGRESSION ; STREAMFLOW ; INDEX ; DISCHARGE
Indexed BySCI
Language英语
WOS IDWOS:000355429000008
PublisherSCIENCE PRESS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44422
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Gan, R,Sun, L,Luo, Y. Baseflow characteristics in alpine rivers - a multi-catchment analysis in Northwest China[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(3):614-625.
APA Gan, R,Sun, L,&Luo, Y.(2015).Baseflow characteristics in alpine rivers - a multi-catchment analysis in Northwest China.JOURNAL OF MOUNTAIN SCIENCE,12(3),614-625.
MLA Gan, R,et al."Baseflow characteristics in alpine rivers - a multi-catchment analysis in Northwest China".JOURNAL OF MOUNTAIN SCIENCE 12.3(2015):614-625.
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