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פותח על ידי קלירמאש פתרונות בע"מ -
Steady water flow with interacting point source–point sink–water table in a cylindrical soil domain
Year:
2019
Source of publication :
Vadose Zone Journal
Authors :
גמליאל, אלון
;
.
פרידמן, שמואל
;
.
Volume :
Co-Authors:
Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

A previously derived analytical solution to the quasi-linear form of the water flow equation is used to analyze (i) steady, coupled plant water uptake from a surface water emitter in a confined cylindrical soil domain with a non-evaporating surface in the presence of a shallow water table, and (ii) water uptake from only the water table in the absence of a surface emitter. Illustrative examples serve to analyze and discuss water-uptake rates of a subsurface, spherical, conceived root zone and the complex water-flow patterns occurring in either natural fields with shallow groundwater or artificial lysimeters. The coupled source–sink–water table model is also used to illustrate the dependence of the contributions of surface emitter and water table to the overall water-uptake rate on capillary length and hydraulic conductivity of the saturated soil, the depth of the water table and its prescribed pressure head, the depth and size of the root zone, and the radius of the confined cylinder, representing the effect of neighboring plants and emitters. The proposed methodology can be used to evaluate the effects of these factors on the potential utilization of shallow groundwater, as well as in cases with a supplementary drip irrigation system, and to support design decisions concerning the distance between emitters (and between plants) and the irrigation rates required to complement plant water uptake from groundwater. © 2019 The Author(s).

Note:
Related Files :
Drip irrigation systems
groundwater
HYDRAULICS
irrigation
Shallow water tables
Soils
Water uptake rates
עוד תגיות
תוכן קשור
More details
DOI :
10.2136/vzj2018.11.0204
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
42800
Last updated date:
02/03/2022 17:27
Creation date:
24/07/2019 11:20
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Scientific Publication
Steady water flow with interacting point source–point sink–water table in a cylindrical soil domain
Steady water flow with interacting point source–point sink–water table in a cylindrical soil domain

A previously derived analytical solution to the quasi-linear form of the water flow equation is used to analyze (i) steady, coupled plant water uptake from a surface water emitter in a confined cylindrical soil domain with a non-evaporating surface in the presence of a shallow water table, and (ii) water uptake from only the water table in the absence of a surface emitter. Illustrative examples serve to analyze and discuss water-uptake rates of a subsurface, spherical, conceived root zone and the complex water-flow patterns occurring in either natural fields with shallow groundwater or artificial lysimeters. The coupled source–sink–water table model is also used to illustrate the dependence of the contributions of surface emitter and water table to the overall water-uptake rate on capillary length and hydraulic conductivity of the saturated soil, the depth of the water table and its prescribed pressure head, the depth and size of the root zone, and the radius of the confined cylinder, representing the effect of neighboring plants and emitters. The proposed methodology can be used to evaluate the effects of these factors on the potential utilization of shallow groundwater, as well as in cases with a supplementary drip irrigation system, and to support design decisions concerning the distance between emitters (and between plants) and the irrigation rates required to complement plant water uptake from groundwater. © 2019 The Author(s).

Scientific Publication
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