干旱区生态环境知识资源中心(Arid): An Analytical Baseflow Coefficient Curve for Depicting the Spatial Variability of Mean Annual Catchment Baseflow

Arid

DOI	10.1029/2020WR029529
	An Analytical Baseflow Coefficient Curve for Depicting the Spatial Variability of Mean Annual Catchment Baseflow
	Cheng, Shujie; Cheng, Lei; Liu, Pan; Qin, Shujing; Zhang, Lu; Xu, Chong-Yu; Xiong, Lihua; Liu, Liu; Xia, Jun
通讯作者	Cheng, L (corresponding author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Peoples R China. ; Cheng, L (corresponding author), Hubei Prov Collaborat Innovat Ctr Water Resources, Wuhan, Peoples R China. ; Cheng, L (corresponding author), Wuhan Univ, Hubei Prov Key Lab Water Syst Sci Sponge City Con, Wuhan, Peoples R China.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2021
卷号	57 期号:8
英文摘要	Catchment baseflow is jointly controlled by climate and landscape properties. Previous studies have recognized that spatial variability of mean annual baseflow coefficient (BFC = Qb/P, ratio of baseflow to precipitation) is primarily controlled by aridity index and storage capacity. However, an analytical solution of BFC in terms of the dominant controlling factors has not yet been established. The objective of this study was to develop an analytical BFC curve to depict spatial variability of BFC based on the limit concept of the Budyko framework. The BFC curve relates the baseflow coefficient to aridity index and storage capacity without resolving complex interactions between evapotranspiration and baseflow generation. The proposed BFC curve showed that, in the arid catchments, baseflow coefficient was primarily limited by available water (precipitation, P) and, in the humid catchments, was jointly controlled by both the available energy (potential evapotranspiration, E-p) and catchment retention capability (ratio of catchment storage capacity to P, i.e., S-p/P). Observed hydrological data from 950 catchments in Australia, the conterminous United States and the United Kingdom with diverse hydro-climatic conditions (BFC = 0.001-0.650) were collected to demonstrate the capability of the developed curve. Results showed that the BFC curve captured the spatial variability of observed BFC in the 950 study catchments (R-2 = 0.75, RMSE = 0.058). Mean annual baseflow estimated by the BFC curve agreed well with observed baseflow (R-2 = 0.86, RMSE = 0.19 mm). The developed analytical curve provides an analytical solution for understanding how aridity index and storage capacity control mean annual catchment baseflow, and will improve predictability of baseflow at ungauged basins.
英文关键词	baseflow coefficient limit concept Budyko framework spatial variability of baseflow aridity index storage capacity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688205400045
WOS关键词	WATER STORAGE CAPACITY ; BUDYKO FRAMEWORK ; GLOBAL PATTERNS ; LAND-USE ; FLOW ; CLIMATE ; RECESSION ; BALANCE ; MODEL ; INDEX
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
来源机构	中国农业大学 ; Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368540
作者单位	[Cheng, Shujie; Cheng, Lei; Liu, Pan; Qin, Shujing; Xu, Chong-Yu; Xiong, Lihua; Xia, Jun] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Peoples R China; [Cheng, Shujie; Cheng, Lei; Liu, Pan; Qin, Shujing; Xiong, Lihua; Xia, Jun] Hubei Prov Collaborat Innovat Ctr Water Resources, Wuhan, Peoples R China; [Cheng, Shujie; Cheng, Lei; Liu, Pan; Qin, Shujing; Xiong, Lihua; Xia, Jun] Wuhan Univ, Hubei Prov Key Lab Water Syst Sci Sponge City Con, Wuhan, Peoples R China; [Zhang, Lu] CSIRO Land & Water, Canberra, ACT, Australia; [Xu, Chong-Yu] Univ Oslo, Dept Geosci, Oslo, Norway; [Liu, Liu] China Agr Univ, Coll Water Resources & Civil Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Shujie,Cheng, Lei,Liu, Pan,et al. An Analytical Baseflow Coefficient Curve for Depicting the Spatial Variability of Mean Annual Catchment Baseflow[J]. 中国农业大学, Commonwealth Scientific and Industrial Research Organisation,2021,57(8).
APA	Cheng, Shujie.,Cheng, Lei.,Liu, Pan.,Qin, Shujing.,Zhang, Lu.,...&Xia, Jun.(2021).An Analytical Baseflow Coefficient Curve for Depicting the Spatial Variability of Mean Annual Catchment Baseflow.WATER RESOURCES RESEARCH,57(8).
MLA	Cheng, Shujie,et al."An Analytical Baseflow Coefficient Curve for Depicting the Spatial Variability of Mean Annual Catchment Baseflow".WATER RESOURCES RESEARCH 57.8(2021).