Soil water retention curves based on idealized models

Сысуев, В. А.; Maksimov, Ivan; Alekseev, V. V.; Maksimov, Vyacheslav I.

doi:10.3103/s1068367413060219

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…When considering the energy of soil moisture, we will take into account the following components: ψʹ is the potential due to the interaction of moisture with the soil solid phase, ψʺ is the potential due to the interaction of moisture with soil air, and ψʹʹʹ is the potential due to osmotic pressure. Then the dependence of the soil moisture potential ψ (J/kg) on the volumetric water content w (m 3 /m 3 ) is written as [13]:…”

Section: Methodsmentioning

confidence: 99%

Modeling process of salt fringe formation during fertigation

Alekseev,

Chuchkalov,

Philippov

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The introduction of mineral substances into the soil through fertigation ensures the localization of the nutrients necessary for the plant in the area of the root system. However, under certain conditions, this method leads to soil salinization. When the soil dries out, salts are predominantly concentrated at the boundary between dry and wet soil, forming a salt fringe. The article describes the results of experiments and a software tool designed to simulate the process of redistribution of salts during soil drying. The results of calculations for soils of central Russia are presented, taking into account the main hydrophysical characteristics of the soil and the function of hydraulic conductivity under various initial conditions in the form of moisture gradients depending on the depth of the soil, the intensity and duration of irrigation, and the concentration of nutrients. It is shown that by selecting the appropriate initial conditions and irrigation regimes, it is possible to significantly reduce the intensity of the formation of salt fringes.

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Section: Methodsmentioning

confidence: 99%

Modeling process of salt fringe formation during fertigation

Alekseev,

Chuchkalov,

Philippov

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Dependences of the coefficient of friction and stickiness on the type, density and soil moisture can be obtained by considering soil moisture as a phase in contact with the solid phase of the soil and soil air. The relationship between the soil moisture potential ψ and surface energy E at the interface between the phases is written as ψ=E/mw (where mw is the mass of moisture) [14], and, when considering the soil-water retention curve, is represented through the equivalent pressure p=ρψ (where ρ is the density of soil moisture) [15]. Taking into account the soil porosity n0 (m 3 /m 3 ), we express the density ρ of the soil as follows…”

Section: Methodsmentioning

confidence: 99%

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Chuchkalov,

Mikhailov,

Lvova

et al. 2023

E3S Web Conf.

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The paper investigated the stability of agricultural land slopes to mini-shear landslides on the basis of a numerical assessment of the influence of soil parameters in the Volga-Vyatka region of Russia on its frictional properties. It has been established that at a moisture content of 0.30 ± 0.04 m3/m3 of gray forest soil and 0.22 ± 0.04 m3/m3 of soddy-podzolic soil, the contribution of soil stickiness to the soil friction coefficient was the most significant, which was due both to the aggregation of soil particles and to the destruction of soil capillaries, and corresponded to the lower limit of soil plasticity. On the basis of the ratio proposed in the paper, a numerical assessment of the ratio of the power and length of the landslide along the slope for different slope angles was carried out, the results of which correspond to real landslide processes on natural and artificial slopes of agricultural land.

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“…Para simplificar el uso de la SWRC en la previsión de propiedades del suelo, algunos investigadores crearon ecuaciones que definen las partes más importantes de la misma. Sysuev et al (2013) reúnen las ecuaciones más conocidas, donde los autores consideran que la ecuación propuesta por Fredlund y Xing (1994) es la que mejor representa las propiedades de la SWRC seguida por la curva propuesta por van Genutchen (1980) comúnmente utilizada en modelos numéricos.…”

Section: Curva De Retención De Agua Del Suelounclassified

Análisis numérico de infiltración de agua en un suelo residual no saturado utilizando la curva de retención de agua

Carnero

Guzmán

2018

Rev. investig. altoandin.

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Soil water retention curves based on idealized models

Cited by 9 publications

References 3 publications

Modeling process of salt fringe formation during fertigation

Modeling process of salt fringe formation during fertigation

Formation conditions and parameters of mini-landslides on agricultural slope landscapes

Análisis numérico de infiltración de agua en un suelo residual no saturado utilizando la curva de retención de agua

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