干旱区生态环境知识资源中心(Arid): Techniques for calibration and validation of SWAT model in data scarce arid and semi-arid catchments in South Africa

Arid

DOI	10.1016/j.ejrh.2019.100621
	Techniques for calibration and validation of SWAT model in data scarce arid and semi-arid catchments in South Africa
	Mengistu, Achamyeleh G.1; van Rensburg, Leon D.1; Woyessa, Yali E.2
通讯作者	Mengistu, Achamyeleh G.
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2019
卷号	25
英文摘要	Study region: This study was conducted in Soutloop River Catchment, Northern Cape, South Africa. Study focus: Although hydrologic models play a critical role in the management of natural resources in arid areas, their application is challenged by the scarcity of data for calibration and validation. Therefore, this study aimed at to configure, calibrate and validate SWAT model in a data-scarce catchment by using the regionalization with physical similarity approach. This approach uses dual calibration and validation procedure, i.e., one in the donor catchment (by using SWAT-CUP (SWAT Calibration and Uncertainty Programs) and the other on the study catchment (by manual calibration and verification). New hydrological insights for the region: Based on the sensitivity analysis, sixteen parameters were calibrated by SWAT-CUP. The result from the uncertainty analysis indicated acceptable values of both the R-factor (0.8) and P-factor (0.7). The model performance evaluation also showed acceptable ranges of values (e.g., NS was 0.76 and R-2 was 0.78). However, the main calibration and validation process was conducted outside the target catchment, though it was assumed that the donor and target catchments have similar hydrological responses. Therefore, the study suggested further inspection methods to minimize the model uncertainty in the study catchment. This study enables researchers to exploit the river eco-regional classifications of South Africa to apply hydrologic models to estimate the components of water balance in arid/ semi-arid catchments.
英文关键词	Arid catchments Calibration Hydrologic models Regionalization SWAT model South Africa
类型	Article
语种	英语
国家	South Africa
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000500501600007
WOS关键词	REMOTELY-SENSED EVAPOTRANSPIRATION ; HYDROLOGICAL MODEL ; STREAMFLOW ESTIMATION ; SOIL-MOISTURE ; WATER-QUALITY ; CROP-YIELD ; REGIONALIZATION ; PARAMETERS ; UNCERTAINTY ; IDENTIFICATION
WOS类目	Water Resources
WOS研究方向	Water Resources
EI主题词	2019-10-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310231
作者单位	1.Univ Free State, Dept Soil Crop & Climate Sci, Bloemfontein, South Africa; 2.Cent Univ Technol, Dept Civil Engn, Bloemfontein, South Africa
推荐引用方式 GB/T 7714	Mengistu, Achamyeleh G.,van Rensburg, Leon D.,Woyessa, Yali E.. Techniques for calibration and validation of SWAT model in data scarce arid and semi-arid catchments in South Africa[J],2019,25.
APA	Mengistu, Achamyeleh G.,van Rensburg, Leon D.,&Woyessa, Yali E..(2019).Techniques for calibration and validation of SWAT model in data scarce arid and semi-arid catchments in South Africa.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,25.
MLA	Mengistu, Achamyeleh G.,et al."Techniques for calibration and validation of SWAT model in data scarce arid and semi-arid catchments in South Africa".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 25(2019).