نتایج جستجو برای: erosion control

تعداد نتایج: 1356155  

Journal: :Journal of Agricultural Meteorology 1954

2006
Peter R. Robichaud

Erosion in the first year after a wildfire can be up to three orders of magnitude greater than the erosion from undisturbed forests. To mitigate potential postfire erosion, various erosion control treatments are applied on highly erodible areas with downstream resources in need of protection. Because postfire erosion rates generally decline by an order of magnitude for each year of recovery, ef...

2002
L. J. Hagen

During the past decade, the physical processes governing erosion of soil by wind have been investigated by a number of researchers (Anderson et al., 1991; Armbrust and Bilbro, 1997; Gillette et al., 1997; Hagen et al.; 1992; Hagen et al.; 1999; Marticorena et al., 1997; and Mirzamostafa et al., 1998). The results of these investigations have improved our understanding of several wind erosion ph...

Journal: :Journal of the Korean Geotechnical Society 2012

H.R. Asgari masume Sabzi, S.F. Afzali

Wind erosion is considered a major global environmental problem. Dust storms from the migration of sand dunes can seriously damage civil, industrial, and agricultural areas and a method to stabilize these sand dunes is mulching. The present study investigates the feasibility of using organic wastes of Press mud and Dunder with clay for the production of environmentally-friendly mulches. Sandy s...

2009
John Widdows Mary D. Brinsley Nick D. Pope

Nereis diversicolor is a widely distributed estuarine polychaete worm that is particularly abundant in the mid to upper parts of estuaries. Laboratory annular flumes were used to study the effects of N. diversicolor density (0 [control], 100, 300, 1000, 3000 individuals m–2) on erodability of cohesive muddy sediments. At the highest densities (1000 and 3000 ind. m–2) there was evidence of activ...

Journal: :iranian journal of earth science 0
s. amini m.sc student, islamic azad university, khorasgan branch, isfahan- iran b. rafiei dept. of geology, bu- ali sina university, hamedan- iran s. khodabakhsh dept. of geology, bu- ali sina university, hamedan- iran m. heydari dept. of geology, bu- ali sina university, hamedan- iran

soil conservation and control of erosion is a basic problem in all countries. the goal of this research is to estimate erosion and sediment yield in ekbatan dam drainage basin by erosion potential method (epm), using geographic information system (gis). the basin is located in hamedan province, west of iran, in a cold and semi- arid region, with an average annual rainfall of 334mm. the study ar...

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