干旱区生态环境知识资源中心(Arid): Numerical and conceptual evaluation of preferential flow in Zarqa River Basin, Jordan

Arid

DOI	10.1016/j.ecohyd.2019.04.001
	Numerical and conceptual evaluation of preferential flow in Zarqa River Basin, Jordan
	Rahbeh, Michel 1; Srinivasan, Raghavan 2; Mohtar, Rabi 2
通讯作者	Rahbeh, Michel
来源期刊	ECOHYDROLOGY & HYDROBIOLOGY
ISSN	1642-3593
EISSN	2080-3397
出版年	2019
卷号	19 期号:2 页码:224-237
英文摘要	Farmers along the main reach of the Zarqa River Basin (ZRB) commonly utilize treated wastewater for irrigation. Deep percolation is expected to occur as a result of irrigation, and it is expected that preferential flow pathways may facilitate the downward movement of irrigation water. Therefore, the aim of this research was to investigate the susceptibility of soils near Zarqa River to preferential flow, and the HYDRUS and Soil and Water Assessment Tool (SWAT) models were used. The methodology consisted of taking tension infiltrometer measurements along the Zarqa River to determine the main physical properties relevant to preferential flow, such as infiltration rate and macroscopic capillary length, followed by investigating the downward water movement using HYDRUS and SWAT. The HYDRUS simulations were conducted using single porosity (SP) and dual porosity (DP) constitutive functions pertaining to matrix and preferential flow, respectively. The in situ tension infiltrometer measurements were used to parameterize the surface layer of the HYDRUS DP model. HYDRUS simulations showed that preferential flow occurring in the surface layer of the soil profile controlled the vertical movement of soil water in excess of field capacity. The comparison between SWAT, SP and DP showed that both SWAT and DP were capable of simulating preferential flow in arid watersheds. However, SWAT simulations of lateral discharge and deep percolation resemble that of the DP only when the evaporation soil compensation factor (ESCO) was set to a value of 0.8 and the length of the soil slope was set to its maximum value. This research recommends using HYDRUS model to verify SWAT model predictions of soil water redistribution in the soil profile and to improve the parameterization of the SWAT model. The research also suggests an approach for the combined use of both models. (C) 2019 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
英文关键词	Soil and Water Assessment Tool (SWAT) HYDRUS
类型	Article
语种	英语
国家	Jordan ; USA
收录类别	SCI-E
WOS记录号	WOS:000470906700005
WOS关键词	LAND-USE CHANGES ; SWAT MODEL ; SOIL-WATER ; HYDRAULIC CONDUCTIVITY ; GROUNDWATER RECHARGE ; CLIMATE ; IRRIGATION ; RESOURCES ; IMPACTS
WOS类目	Ecology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215148
作者单位	1.Univ Jordan, Fac Agr, Dept Land Water & Environm, Amman, Jordan; 2.Texas A&M Univ, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Rahbeh, Michel,Srinivasan, Raghavan,Mohtar, Rabi. Numerical and conceptual evaluation of preferential flow in Zarqa River Basin, Jordan[J],2019,19(2):224-237.
APA	Rahbeh, Michel,Srinivasan, Raghavan,&Mohtar, Rabi.(2019).Numerical and conceptual evaluation of preferential flow in Zarqa River Basin, Jordan.ECOHYDROLOGY & HYDROBIOLOGY,19(2),224-237.
MLA	Rahbeh, Michel,et al."Numerical and conceptual evaluation of preferential flow in Zarqa River Basin, Jordan".ECOHYDROLOGY & HYDROBIOLOGY 19.2(2019):224-237.