نتایج جستجو برای: soil moisture retention curve

تعداد نتایج: 395269  

Agricultural residues and various other materials are currently being used as additives to improve the physical and chemical properties of soil. Iran is located in an arid and semiarid region, so using strategies to reduce water use will reduce the problem water scarcity. The use of superabsorbent to increase water uptake and retention is one of the solutions that have been applied to improve w...

2013
Albane Saintenoy Jan W. Hopmans

We are interested in Ground Penetrating Radar (GPR) as a geophysical tool useful for determining the depth of the ground water table (GWT) and for monitoring shallow water infiltration in sandy soils. At hydrostatic equilibrium, the water content distribution in a homogeneous unsaturated soil down to the water saturated zone depends on the soil water retention function. A classical way to fit r...

2015
B Tóth M Weynants A Nemes A Makó G Bilas G Tóth

A range of continental-scale soil datasets exists in Europe with different spatial representation and based on different principles. We developed comprehensive pedotransfer functions (PTFs) for applications principally on spatial datasets with continental coverage. The PTF development included the prediction of soil water retention at various matric potentials and prediction of parameters to ch...

Journal: :International Journal of Geomechanics 2022

This paper investigates the effect of soil moisture evaporation rate on water retention curve (SWRC) clays obtained using high-capacity tensiometer (HCT) technique and following continuous drying (dynamic) method. SWRC measurements, with without control, were carried out reconstituted London clay specimens 12 performance-improved HCTs recently developed at University Warwick. Furthermore, HCTs'...

2016
David. A. Robinson Scott B. Jones Inma Lebron Sabine Reinsch María T. Domínguez Andrew R. Smith Davey L. Jones Miles R. Marshall Bridget A. Emmett

Ecosystems may exhibit alternative stable states (ASS) in response to environmental change. Modelling and observational data broadly support the theory of ASS, however evidence from manipulation experiments supporting this theory is limited. Here, we provide long-term manipulation and observation data supporting the existence of drought induced alternative stable soil moisture states (irreversi...

2017
Hongwei Zhang Zhijun Wan Dan Ma Bo Zhang Peng Zhou

Injecting water into a coal seam to enhance the cohesive strength of coal and thus minimize and reduce the coal wall spalling risk must be considered in underground coal mining systems. In general, coal with low cohesive strength contains clay minerals which may affect the stability of coal by interacting with water. Therefore, the coupled effects of moisture content and inherent clay minerals ...

ژورنال: علوم آب و خاک 2012
بهروز مصطفی زاده فرد, , سمیه یوسفی مقدم, , سید فرهاد موسوی, , عباس همت, , محمد رضا یزدانی, ,

Puddling is the most common method of land preparation for lowland rice cultivation. The purpose of this study was to assess the influence of various intensities of puddling on percolation rate, water retention by soil and the amount of water used for different puddling intensities in three dominant soil textures of paddy fields in Guilan province. Undisturbed soil samples were taken from 3 dif...

2017
Grant H. West

Irrigated row-crop agriculture is contributing to declining groundwater in areas such as the Mississippi Delta region of eastern Arkansas. There is a need to move toward sustainable levels of groundwater withdrawal. Recent improvements in remote monitoring technologies such as wireless soil moisture sensors and unmanned aerial vehicles offer the potential for farmers to effectively practice sit...

2018
Michael Bitterlich Martin Sandmann Jan Graefe

Arbuscular mycorrhizal fungi (AMF) proliferate in soil pores, on the surface of soil particles and affect soil structure. Although modifications in substrate moisture retention depend on structure and could influence plant water extraction, mycorrhizal impacts on water retention and hydraulic conductivity were rarely quantified. Hence, we asked whether inoculation with AMF affects substrate wat...

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