ECOPERSIA
ECOPERSIA
ECOPERSIA
Basic Sciences
http://ecopersia.modares.ac.ir
1
admin
2322-2700
2538-2152
10.22034/ecopersia
en
jalali
1397
8
1
gregorian
2018
11
1
6
4
online
1
fulltext
en
Impact of Soil Water Repellency on Hydrological and Erosion Processes; A Review
<div style="text-align: justify;"><a name="OLE_LINK35"></a><a name="OLE_LINK52"></a><a name="OLE_LINK51"><strong>Introduction: </strong></a>Soil water repellency was first reported in the first half of the 20<sup>th</sup> century for peat soils. Depending on the severity of water repellency, a water repellent soil will resist water penetration during seconds to hours or even days. This has detrimental effects on surface and subsurface flow processes such as increased runoff, erosion, and preferential flow. The present study was conducted with the aim of investigating the effects of Soil water repellency on hydrological and erosion processes in order to identify gaps in the existing investigations.<br>
<strong>Conclusion: </strong>Major survey gaps remained, including the dissociation of the symptoms of water repellency on soil erosion such as the existence of a soil crust and little knowledge of the temporal patterns of water repellency and their hydrological outcomes. Understanding the mechanisms of water repellency is relevant to the separation of different causal chains as well as the adjust runoff coefficients in different water repellency areas. Soil water repellency can be caused by a variety of compounds and processes and generally occurs after a period of drying weather. Under such conditions, the soil can change from a wettable to a water-repellent state when dried below its critical soil water content. Soil water repellency is found to occur in different soils worldwide, ranging from coarse to fine-textured. Water repellency in soils can result in losses of plant-available water, reduced agricultural crop production, and deterioration of turf quality on sports fields.</div>
Hydrology, Runoff, Soil, Erosion, Soil Water Repellent Layer
269
284
http://ecopersia.modares.ac.ir/browse.php?a_code=A-10-40442-1&slc_lang=en&sid=24
K.
Heidary
1003194753284600100620
1003194753284600100620
No
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran
A.
Najafi Nejad
najafinejad@gmail.com
1003194753284600100621
1003194753284600100621
Yes
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran
L.W.
Dekker
louis.dekker@wur.nl
1003194753284600100622
1003194753284600100622
No
Environmental Sciences Department, Soil Physics & Land Management Group, Wageningen University & research, Wageningen, Netherlands
M.
Ownegh
mownegh@yahoo.com
1003194753284600100623
1003194753284600100623
No
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran
A.
Mohammadian Behbahani
1003194753284600100624
1003194753284600100624
No
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran