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Ecopersia، جلد ۶، شماره ۴، صفحات ۲۶۹-۲۸۴
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی Impact of Soil Water Repellency on Hydrological and Erosion Processes; A Review
چکیده انگلیسی مقاله Introduction: Soil water repellency was first reported in the first half of the 20th 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. Conclusion: 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.
کلیدواژه‌های انگلیسی مقاله Hydrology, Runoff, Soil, Erosion, Soil Water Repellent Layer
نویسندگان مقاله | K. Heidary
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran


| A. Najafi Nejad
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran


| L.W. Dekker
Environmental Sciences Department, Soil Physics & Land Management Group, Wageningen University & research, Wageningen, Netherlands


| M. Ownegh
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran


| A. Mohammadian Behbahani
Watershed & Arid Zone Management Department, Rangeland & Watershed Management Faculty, Gorgan University of Agricultural Sciences & Natural Resources (GUASNR), Gorgan, Iran
نشانی اینترنتی http://journals.modares.ac.ir/browse.php?a_code=A-10-40442-1&slc_lang=en&sid=24
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