干旱区生态环境知识资源中心(Arid): Groundwater recharge modelling in a large scale basin: an example using the SWAT hydrologic model

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DOI	10.1007/s40808-017-0383-z
	Groundwater recharge modelling in a large scale basin: an example using the SWAT hydrologic model
	Gyamfi, Charles; Ndambuki, Julius Musyoka; Anornu, Geophrey Kwame; Kifanyi, Gislar Edgar
通讯作者	Gyamfi, C
来源期刊	MODELING EARTH SYSTEMS AND ENVIRONMENT
ISSN	2363-6203
EISSN	2363-6211
出版年	2017
卷号	3 期号:4 页码:1361-1369
英文摘要	Groundwater constitutes an essential resource that augments surface water resources in meeting the water supply needs of man and the ecosystem. Most importantly in arid and semi-arid environments where rainfall patterns are erratic, groundwater resources are often the preferred source of water. This causes enormous pressure on the resource leading to diminishing groundwater resources. Land use changes also impact on groundwater resources through alterations in the hydrologic regime. It is imperative therefore to evaluate groundwater recharge dynamics under changing land uses to provide for a better resource planning and allocation. We present in this study, an investigation into groundwater recharge dynamics of the Olifants Basin, a water stressed basin in Southern Africa over the past decade with considerations to land use changes. Three land use change scenarios were developed to simulate the groundwater recharge of the basin within the Soil and Water Assessment Tool (SWAT) environment. The SWAT model was calibrated (1988-2001) and validated (2002-2013) with good model performance statistics; NSE, R-2, PBIAS, RSR of 0.88, 0.89, -11.49%, 0.34 and 0.67, 0.78, -20.69%, 0.57 respectively for calibration and validation stages. Findings indicate groundwater recharge declined by 10.37 mm (30.3%) and 2.34 mm (9.82%) during the periods 2000-2007 and 2007-2013 respectively. The decline in groundwater recharge was linked to the changes in urban (9.2%), agriculture (6.1%), rangelands (-16.8%) during the period 2000-2007 and urban (1.3%), agricultural (14%), rangelands (-14.8%) during 2007-2013. The SWAT model reveals it capabilities as a decision support tool (DST) in groundwater recharge assessment for large scale basins.
英文关键词	Groundwater recharge Land use Olifants Basin SWAT
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000432245800011
WOS关键词	LAND-USE CHANGE ; SEDIMENT YIELD ; RIVER-BASIN ; IMPACT ; SIMULATION ; STREAMFLOW ; WATER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
Scopus学科分类	Ho Tech Univ, Dept Civil Engn, Box HP 217, Ho, Ghana.
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332583
作者单位	[Gyamfi, Charles; Ndambuki, Julius Musyoka; Kifanyi, Gislar Edgar] Tshwane Univ Technol, Dept Civil Engn, ZA-0001 Pretoria, South Africa; [Gyamfi, Charles] Ho Tech Univ, Dept Civil Engn, Box HP 217, Ho, Ghana; [Anornu, Geophrey Kwame] Kwame Nkrumah Univ Sci & Technol, Dept Civil Engn, Kumasi, Ghana
推荐引用方式 GB/T 7714	Gyamfi, Charles,Ndambuki, Julius Musyoka,Anornu, Geophrey Kwame,et al. Groundwater recharge modelling in a large scale basin: an example using the SWAT hydrologic model[J],2017,3(4):1361-1369.
APA	Gyamfi, Charles,Ndambuki, Julius Musyoka,Anornu, Geophrey Kwame,&Kifanyi, Gislar Edgar.(2017).Groundwater recharge modelling in a large scale basin: an example using the SWAT hydrologic model.MODELING EARTH SYSTEMS AND ENVIRONMENT,3(4),1361-1369.
MLA	Gyamfi, Charles,et al."Groundwater recharge modelling in a large scale basin: an example using the SWAT hydrologic model".MODELING EARTH SYSTEMS AND ENVIRONMENT 3.4(2017):1361-1369.