Diffusivity and sorptivity determination at different soil water contents from horizontal infiltration

Villarreal, Rafael; Lozano, Luis Alberto; Melani, Esteban; Salazar, María Paz; Otero, María Florencia; Soracco, Carlos Germán

doi:10.1016/j.geoderma.2018.11.045

Cited by 24 publications

(23 citation statements)

References 45 publications

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“…It was found that S w is not function of water source tension, but is function of initial soil water content. The highest value of S w corresponded to the lowest soil water con-tent, remaining practically constant in a large range of soil water content, and abruptly decreasing near saturation toward zero (Villarreal et al, 2019). It should be mentioned that the water sorptivity depends on SWR and soil pore size, and ethanol sorptivity depends mainly on soil pore size.…”

Section: Field Methodsmentioning

confidence: 93%

Impact of secondary succession in abandoned fields on some properties of acidic sandy soils

Lichner

Iovino

Šurda

et al. 2020

Journal of Hydrology and Hydromechanics

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Abandonment of agricultural lands in recent decades is occurring mainly in Europe, North America and Oceania, and changing the fate of landscapes as the ecosystem recovers during fallow stage. The objective of this study was to find the impact of secondary succession in abandoned fields on some parameters of acidic sandy soils in the Borská nížina lowland (southwestern Slovakia). We investigated soil chemical (pH and soil organic carbon content), hydrophysical (water sorptivity, and hydraulic conductivity), and water repellency (water drop penetration time, water repellency cessation time, repellency index, and modified repellency index) parameters, as well as the ethanol sorptivity of the studied soils. Both the hydrophysical and chemical parameters decreased significantly during abandonment of the three investigated agricultural fields. On the other hand, the water repellency parameters increased significantly, but the ethanol sorptivity did not change during abandonment. As the ethanol sorptivity depends mainly on soil pore size, the last finding could mean that the pore size of acidic sandy soils did not change during succession.

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Section: Field Methodsmentioning

confidence: 93%

Impact of secondary succession in abandoned fields on some properties of acidic sandy soils

Lichner

Iovino

Šurda

et al. 2020

Journal of Hydrology and Hydromechanics

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“…La importancia de la determinación mediante un modelo matemático se debe a que resultan costosos los métodos por parámetros hidrológicos en campo [15]. Entre tanto, por medio de la determinación de la difusividad en condiciones controladas y de la formulación de modelos matemáticos basados en la ecuación de Richards, se han hecho determinaciones precisas de infiltración [26], conductividad hidráulica [27] y sortividad [15], cuyos valores se usan para el cálculo con fines de sistemas de riego, movimiento de fluidos en el área de hidrocarburos y riesgos de contaminación por lixiviación con agroquímicos.…”

Section: Resultados Y Discusiónunclassified

Solución analítica de la ecuación de Richards en suelos no saturados basada en el modelo de Gardner. Caso de difusividad constante

Quispe

Chipantiza

Bonilla

et al. 2020

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El artículo se centra en encontrar la solución analítica de la ecuación de Richards, usada para modelar el movimiento del agua en un medio poroso no saturado y para restringir el estudio a la circulación vertical descendente del fluido, con fuentes de humedad nulas y difusividad constante en el suelo. Se empleó la relación constitutiva de Gardner. Los resultados arrojados muestran que empleando la relación de Gardner se consigue una solución para el contenido de humedad en el suelo de tipo exponencial, tanto en la componente espacial como en la temporal y dependiente del autovalor γ, el cual restringe las soluciones particulares del modelo de Gardner a un conjunto determinado de valores.

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“…It was found that Sw is not function of water source tension, but is function of initial soil water content. The highest value of Sw corresponded to the lowest soil water content, remaining practically constant in a large range of soil water content, and abruptly decreasing near saturation toward zero (Villarreal et al, 2019). It should be mentioned that the water sorptivity is a measure of both the SWR and soil pore size, while the ethanol sorptivity is a measure of soil pore size only.…”

Section: Field Methodsmentioning

confidence: 97%

Evaluation of soil properties in variously aged Scots pine plantations established on sandy soil

Šurda

Lichner

Kollár

et al. 2021

Journal of Hydrology and Hydromechanics

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Pines are widely planted for sand dune stabilization and their cultivation results in the changes in physical, chemical, hydro-physical and water repellency properties. Soil properties were evaluated at three Scots pine plantations (PF1, PF2 and PF3) close to Studienka village, Borská nížina lowland (southwestern Slovakia) during hot and dry summer period. The PF1 site is a newly established plantation, the PF2 site is about 30 years old plantation, and the PF3 site is about 100 years old plantation. Here, we estimated the differences in pH, soil organic carbon content, Cox, particle size distribution, PSD, saturated, ks, and unsaturated, k(–2 cm), hydraulic conductivity, water, Sw , and ethanol, Se , sorptivity, water drop penetration time, WDPT, and repellency index, RI. It was found that Cox varies most significantly with plantation age, and relative differences in PSD and pH were lower than the relative difference in Cox. The PF3 site differs the most from the other two, especially in Cox and in the content of sand fraction. It can be attributed to the older age of the plantation, which represents a more advanced stage of succession accompanied by an accumulation of soil organic matter. Relationships between Cox, k(–2 cm), RI, and WDPT and pine forest age were described by appropriate mathematical models. We found a similarity between k(–2 cm) and RI relationships vs. pine forest age (exponential models), and between Cox and WDPT relationships vs. pine forest age (first and second-order polynomial models). The latter similarity can be supported by the fact that soil water repellency is induced by the hydrophobic and amphiphilic components of soil organic matter.

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Diffusivity and sorptivity determination at different soil water contents from horizontal infiltration

Cited by 24 publications

References 45 publications

Impact of secondary succession in abandoned fields on some properties of acidic sandy soils

Impact of secondary succession in abandoned fields on some properties of acidic sandy soils

Solución analítica de la ecuación de Richards en suelos no saturados basada en el modelo de Gardner. Caso de difusividad constante

Evaluation of soil properties in variously aged Scots pine plantations established on sandy soil

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