A New Two-Stage Approach to predicting the soil water characteristic from saturation to oven-dryness

Jensen, Dan Karup; Tuller, Markus; Jonge, Lis Wollesen de; Arthur, Emmanuel; Møldrup, Per

doi:10.1016/j.jhydrol.2014.12.018

Cited by 82 publications

(93 citation statements)

References 32 publications

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“…Particle-size distribution (PSD) is a basic property of mineral soils and can be measured easily and quickly. Using PSD, alone or in combination with bulk density and soil organic matter content, as surrogate data is attractive to predict selected points on the SWCC or the entire SWCC (Arya et al, 1999;Skaggs et al, 2001;Ramos et al, 2014;Jensen et al, 2015).…”

Section: à3mentioning

confidence: 99%

“…Antinoro et al (2014) found that SWCCs of 140 Sicilian soils predicted by the AP model with a values formulated by the logistic growth equation were more biased than using a values given by the linear equation with regression coefficients directly from Arya et al (1999). Therefore, the empirical parameters in the semi-physical models need to be determined in individual studies (Arya and Heitman, 2015;Jensen et al, 2015).…”

Section: à3mentioning

confidence: 99%

“…In the wet range, the SWCC is governed by capillary forces, the presence of structural cracks or macropores, and structural disturbances during the sampling and handling may result in lower measured than predicted h values (Arya and Paris, 1981;Antinoro et al, 2014). In the dry range of the SWCC, water is dominated by adsorptive forces Jensen et al, 2015). The incomplete desorption The left column refers to field capacity under pressure heads of À330 cm of water for the first six textural classes and À100 cm of water for loamy sand and sand soils.…”

Section: à3mentioning

confidence: 99%

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Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Gao

Shao

et al. 2016

Journal of Hydrology

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Keywords:Soil water characteristic curve Soil available water Pedotransfer functions Oasis-desert transect s u m m a r y A detailed understanding of soil hydraulic properties, particularly the available water content of soil, (AW, cm 3 cm À3), is required for optimal water management. Direct measurement of soil hydraulic properties is impractical for large scale application, but routinely available soil particle-size distribution (PSD) and bulk density can be used as proxies to develop various prediction functions. In this study, we compared the performance of the Arya and Paris (AP) model, Mohammadi and Vanclooster (MV) model, Arya and Heitman (AH) model, and Rosetta program in predicting the soil water characteristic curve (SWCC) at 34 points with experimental SWCC data in an oasis-desert transect (20 Â 5 km) in the middle reaches of the Heihe River basin, northwestern China. The idea of the three models emerges from the similarity of the shapes of the PSD and SWCC. The AP model, MV model, and Rosetta program performed better in predicting the SWCC than the AH model. The AW determined from the SWCCs predicted by the MV model agreed better with the experimental values than those derived from the AP model and Rosetta program. The fine-textured soils were characterized by higher AW values, while the sandy soils had lower AW values. The MV model has the advantages of having robust physical basis, being independent of databaserelated parameters, and involving subclasses of texture data. These features make it promising in predicting soil water retention at regional scales, serving for the application of hydrological models and the optimization of soil water management.

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Section: à3mentioning

confidence: 99%

Section: à3mentioning

confidence: 99%

Section: à3mentioning

confidence: 99%

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Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Gao

Shao

et al. 2016

Journal of Hydrology

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“…2 principle of the AP model, many researchers have focused on improving the suction head calculations, which are commonly based on the capillary equation; however, various methods are used to translate the particle diameter into the pore diameter (Haverkamp et al, 1986;Zhuang et al, 2001;Mohammadi and Vanclooster, 2011;Jensen et al, 2015). Some models estimate the pore diameter based on particle packing patterns (e.g., the MV model), while others utilize the proportionality factor between the pore size and the associated particle diameter (e.g., the HP model and two-stage approach).…”

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Predicting the soil water characteristic curve from the particle size distribution based on a pore space geometry containing slit-shaped spaces

Chang¹,

Cheng²

2017

Preprint

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Abstract. Traditional models employed to predict the soil water characteristic curve (SWC) from the particle size distribution (PSD) always underestimate the water content in the dry range of the SWC. Using the measured physical 10 parameters of 48 soil samples from the UNSODA unsaturated soil hydraulic property database, these errors were proven to originate from the underestimation of the pore volume fraction of the minimum pore diameter range. A method was therefore proposed to improve the estimation of the water content in the high suction range using a pore model comprising a circle-shaped central pore connected to slit-shaped spaces; in this model, the pore volume fraction of the minimum pore diameter range and the corresponding water content were accordingly increased. The SWCs predicted using the improved 15 method reasonably approximated the measured SWCs, and which were more accurate than those obtained using traditional method in the dry range of the SWC.

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“…Em função da extensa ordem de magnitude dos valores de potencial matricial, determinados em um intervalo de conteúdo de água normalmente observado em aplicações práticas, o potencial matricial é frequentemente representado em escala logarítmica. O estudo da CRAS é importante para o conhecimento da dinâmica da água no solo, disponibilidade de água para as plantas, evapotranspiração e modelagem de fluxos de água e vapor em solos insaturados, determinação de volumes de irrigação, fertilização e remediação de solos poluídos (SOLONE et al 2012;JENSEN et al 2015).…”

Section: Curva De Retenção Da áGua No Solo (Cras)unclassified

O conceito de equilíbrio hidráulico e termodinâmico da água no solo aplicado ao estudo da curva de retenção e murchamento de plantas

Torres¹

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A New Two-Stage Approach to predicting the soil water characteristic from saturation to oven-dryness

Cited by 82 publications

References 32 publications

Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Predicting the soil water characteristic curve from the particle size distribution based on a pore space geometry containing slit-shaped spaces

O conceito de equilíbrio hidráulico e termodinâmico da água no solo aplicado ao estudo da curva de retenção e murchamento de plantas

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