干旱区生态环境知识资源中心(Arid): Climatic and Landscape Controls on Long-Term Baseflow

Arid

DOI	10.1029/2020WR029284
	Climatic and Landscape Controls on Long-Term Baseflow
	Yao, Lili; Sankarasubramanian, A.; Wang, Dingbao
通讯作者	Wang, DB (corresponding author), Univ Cent Florida, Dept Civil Environm & Construct Engn, Orlando, FL 32816 USA.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2021
卷号	57 期号:6
英文摘要	For evaluating the climatic and landscape controls on long-term baseflow, baseflow index (BFI, defined as the ratio of baseflow to streamflow) and baseflow coefficient (BFC, defined as the ratio of baseflow to precipitation) are formulated as functions of climate aridity index, storage capacity index (defined as the ratio of average soil water storage capacity to precipitation), and a shape parameter for the spatial variability of storage capacity. The derivation is based on the two-stage partitioning framework and a cumulative distribution function for storage capacity. Storage capacity has a larger impact on BFI than on BFC. When storage capacity index is smaller than 1, BFI is less sensitive to storage capacity index in arid regions compared to that in humid regions; whereas, when storage capacity index is larger than 1, BFI is less sensitive to storage capacity index in humid regions. The impact of storage capacity index on BFC is only significant in humid regions. The shape parameter plays an important role on fast flow generation at the first-stage partitioning in humid regions and baseflow generation at the second-stage partitioning in arid regions. The derived formulae were applied to more than 400 catchments where storage capacity index was found to follow a logarithmic function with climate aridity index. The role of climate forcings at finer timescales on baseflow were quantified, indicating that seasonality in climate forcings has a significant control especially on BFI.
英文关键词	baseflow index baseflow coefficient aridity index storage capacity two-stage partitioning seasonality
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000667245100009
WOS关键词	SOIL-WATER STORAGE ; CATCHMENT PROPERTIES ; SURFACE-WATER ; UNITED-STATES ; FLOW INDEX ; LAND-USE ; RUNOFF ; MODEL ; BALANCE ; REGIONALIZATION
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351989
作者单位	[Yao, Lili; Wang, Dingbao] Univ Cent Florida, Dept Civil Environm & Construct Engn, Orlando, FL 32816 USA; [Sankarasubramanian, A.] North Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC USA
推荐引用方式 GB/T 7714	Yao, Lili,Sankarasubramanian, A.,Wang, Dingbao. Climatic and Landscape Controls on Long-Term Baseflow[J],2021,57(6).
APA	Yao, Lili,Sankarasubramanian, A.,&Wang, Dingbao.(2021).Climatic and Landscape Controls on Long-Term Baseflow.WATER RESOURCES RESEARCH,57(6).
MLA	Yao, Lili,et al."Climatic and Landscape Controls on Long-Term Baseflow".WATER RESOURCES RESEARCH 57.6(2021).