干旱区生态环境知识资源中心(Arid): Estimation of the soil hydraulic properties from field data by solving an inverse problem

Arid

DOI	10.1038/s41598-020-66282-5
	Estimation of the soil hydraulic properties from field data by solving an inverse problem
	Guellouz, Lamia 1; Askri, Brahim 1; Jaffre, Jerome 2; Bouhlila, Rachida 1
通讯作者	Guellouz, Lamia
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	Estimating unsaturated soil hydraulic properties to predict water dynamics through a vertical soil profile under the effects of irrigation, drainage and evapotranspiration is imperative for managing soils in the arid regions. The aim of this work was to determine the soil water retention curve and the hydraulic permeability function of a bare soil profile in a Tunisian oasis threatened by salinization. The developed model combines a numerical inversion of the unsaturated flow equation with the BOBYQA optimisation algorithm. The direct model solved the Richards equation using a cell-centred finite difference model. Hydraulic properties were described by van Genuchten-Mualem models. Input data for the inverse problem are the infiltration flow, soil water contents and pressure heads measured during ponded infiltration and internal drainage tests. Numerical simulations of these two tests were performed considering a homogeneous single-layer soil profile but a better fitting between measured and simulated water contents was obtained when the soil profile was divided into five sub-layers. The hysteresis phenomenon was highlighted from the soil water retention and the relative permeability curves corresponding to the ponded infiltration and internal drainage tests.
类型	Article
语种	英语
国家	Tunisia ; France
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000543956100003
WOS关键词	PARAMETER-ESTIMATION ; SOLUTE TRANSPORT ; UNSATURATED FLOW ; CONDUCTIVITY ; EQUATION ; WATER ; MODELS ; SALINITY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319791
作者单位	1.Univ Tunis El Manar, LMHE, ENIT, Tunis, Tunisia; 2.INRIA Paris, 2 Rue Simone IFF, F-75589 Paris, France
推荐引用方式 GB/T 7714	Guellouz, Lamia,Askri, Brahim,Jaffre, Jerome,et al. Estimation of the soil hydraulic properties from field data by solving an inverse problem[J],2020,10(1).
APA	Guellouz, Lamia,Askri, Brahim,Jaffre, Jerome,&Bouhlila, Rachida.(2020).Estimation of the soil hydraulic properties from field data by solving an inverse problem.SCIENTIFIC REPORTS,10(1).
MLA	Guellouz, Lamia,et al."Estimation of the soil hydraulic properties from field data by solving an inverse problem".SCIENTIFIC REPORTS 10.1(2020).