scholarly journals EXPERIMENTS OF RAIN INFILTRATION ON CHARACTERISTICS OF SOIL WATER MOVEMENT USING A SOIL COLUMN

1983 ◽  
Vol 56 (2) ◽  
pp. 81-93 ◽  
Author(s):  
Yasuo SAKURA ◽  
Makoto TANIGUCHI
Keyword(s):  
Soil Water ◽  
Water Movement ◽  
Soil Column ◽  
Rain Infiltration ◽  
Soil Water Movement

Soil Column to Demonstrate Soil-Water Movement

1998 ◽  
Vol 27 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Crile Doscher ◽  
James M. Hamlett ◽  
Christopher J. Duffy
Keyword(s):  
Soil Water ◽  
Water Movement ◽  
Soil Column ◽  
Soil Water Movement

Modeling Soil Water Movement in Pedostructure

2006 ◽  
Author(s):  
Rabi H. Mohtar ◽  
Erik Braudeau
Keyword(s):  
Soil Water ◽  
Water Movement ◽  
Soil Water Movement

Simulating soil-water movement under a hedgerow surrounding a bottomland reveals the importance of transpiration in water balance

2008 ◽  
Vol 22 (5) ◽  
pp. 577-585 ◽  
Author(s):  
Z. Thomas ◽  
J. Molénat ◽  
V. Caubel ◽  
C. Grimaldi ◽  
P. Mérot
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Water Movement ◽  
Soil Water Movement

scholarly journals Discontinuous finite volume element method of two-dimensional unsaturated soil water movement problem

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Fan Chen ◽  
Zhixiao Xu
Keyword(s):  
Soil Water ◽  
Finite Volume ◽  
Unsaturated Soil ◽  
Water Movement ◽  
Optimal Error Estimate ◽  
Two Dimensional ◽  
Fully Discrete ◽  
Volume Method ◽  
Movement Problem ◽  
Soil Water Movement

AbstractIn this paper, a numerical approximation method for the two-dimensional unsaturated soil water movement problem is established by using the discontinuous finite volume method. We prove the optimal error estimate for the fully discrete format. Finally, the reliability of the method is verified by numerical experiments. This method is not only simple to calculate, but also stable and reliable.

Unsaturated soil water movement in hysteretic and water repellent field soils

1996 ◽  
Vol 184 (3-4) ◽  
pp. 153-173 ◽  
Author(s):  
J.C. van Dam ◽  
J.H.M. Wösten ◽  
A. Nemes
Keyword(s):  
Soil Water ◽  
Unsaturated Soil ◽  
Water Movement ◽  
Water Repellent ◽  
Field Soils ◽  
Soil Water Movement

Unsaturated zone tritium and chlorine 36 profiles from southern Australia: Their use as tracers of soil water movement

1994 ◽  
Vol 30 (6) ◽  
pp. 1709-1719 ◽  
Author(s):  
P. G. Cook ◽  
I. D. Jolly ◽  
F. W. Leaney ◽  
G. R. Walker ◽  
G. L. Allan ◽  
...  
Keyword(s):  
Soil Water ◽  
Unsaturated Zone ◽  
Water Movement ◽  
Chlorine 36 ◽  
Soil Water Movement

scholarly journals Effects of Earthworm Cast Application on Water Evaporation and Storage in Loess Soil Column Experiments

2020 ◽  
Vol 12 (8) ◽  
pp. 3112 ◽  
Author(s):  
Yanpei Li ◽  
Mingan Shao ◽  
Jiao Wang ◽  
Tongchuan Li
Keyword(s):  
Soil Water ◽  
Small Particle ◽  
Storage Capacity ◽  
Water Movement ◽  
Soil Column ◽  
Water Storage ◽  
Loess Soil ◽  
Soil Evaporation ◽  
Upward Movement ◽  
Water Storage Capacity

Earthworm cast is a common bio-organic fertiliser, which can effectively improve soil fertility and structure. However, only a few studies have focused on the effect of earthworm cast on soil water movement. In this study, loess soil was used to determine the effects of earthworm cast application on soil evaporation. The effects on water storage capacity and capillary upward movement were also investigated. A laboratory-based soil column experiment using earthworm cast with different particle sizes (1–3 × 1–2 cm and 3–5 × 2–4 cm) and three application doses (5%, 7.5%, and 10%) was carried out. The daily evaporation and volume of capillary ascension were monitored. The addition of earthworm cast clearly affected the soil evaporation by changing soil water storage capacity and capillary water upward movement. Compared with control soil, the application of 5% small-particle cast reduced the soil cumulative evaporation by 5.13%, while the cumulative evaporation was higher in all large-particle cast treatments. The upward capillary water movement increased with increasing dose of earthworm cast, but decreased with increasing particle size. Overall, the addition of earthworm cast clearly enhanced the water storage capacity of the soil, with the small-particle cast having greater effects than the large-particle cast. We concluded that the application of 5% small-particle earthworm cast can enhance soil water retention and reduce soil evaporation.

Effects of the micro-scale advection on the soil water movement in micro-irrigated fields

2013 ◽  
Vol 32 (2) ◽  
pp. 159-167 ◽  
Author(s):  
Kozue Yuge ◽  
Mitsumasa Anan ◽  
Yoshiyuki Shinogi
Keyword(s):  
Soil Water ◽  
Water Movement ◽  
Micro Scale ◽  
Soil Water Movement

scholarly journals Hermite Radial Basis Collocation Method for Unsaturated Soil Water Movement Equation

2018 ◽  
Vol 2018 ◽  
pp. 1-19 ◽  
Author(s):  
Jiao Wang ◽  
Lijun Su ◽  
Xinqiang Qin
Keyword(s):  
Soil Water ◽  
Collocation Method ◽  
Unsaturated Soil ◽  
Nonlinear Diffusion ◽  
Neumann Boundary Condition ◽  
Water Movement ◽  
Neumann Boundary ◽  
Diffusion Term ◽  
Radial Basis ◽  
Soil Water Movement

Due to the nonlinear diffusion term, it is hard to use the collocation method to solve the unsaturated soil water movement equation directly. In this paper, a nonmesh Hermite collocation method with radial basis functions was proposed to solve the nonlinear unsaturated soil water movement equation with the Neumann boundary condition. By preprocessing the nonlinear diffusion term and using the Hermite radial basis function to deal with the Neumann boundary, the phenomenon that the collocation method cannot be used directly is avoided. The numerical results of unsaturated soil moisture movement with Neumann boundary conditions on the regular and nonregular regions show that the new method improved the accuracy significantly, which can be used to solve the low precision problem for the traditional collocation method when simulating the Neumann boundary condition problem. Moreover, the effectiveness and reliability of the algorithm are proved by the one-dimensional and two-dimensional engineering problem of soil water infiltration in arid area. It can be applied to engineering problems.

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