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(Evaluation of Factors Affecting Water Erosion Along Skid Trails (Case Study; Shafarood Forest, Northern Iran
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نویسنده
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باقری ا ,نقدی ر ,مرادمند جلالی ع
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منبع
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Caspian Journal Of Environmental Sciences - 2013 - دوره : 11 - شماره : 2 - صفحه:151 -160
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چکیده
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Water erosion causes severe soil damage in northern forests of iran which is associated with different rutdepths in skid trails. the aim of this study was to assess rutting and soil displacement on skid trails tomitigate water erosion. therefore the research was carried out in eight parcels of district no 3 of shafaroodforest in the north of iran. in order to evaluate the amount of erosion in skid trails, 30 lateral profiles inthree slope classes (0-15, 15-25 and > 25%) were randomly chosen from 10 skid trails. the amount of soildisplaced and ruts were measured using lateral profile of skid trail. then the effective factors on soildisturbances such as longitudinal slope, soil texture, crown canopy and forest floor cover were separatelymeasured in the studied plots. the results of regression analysis showed that there were significantdifferences between amount of soil erosion and longitudinal slope, soil texture, crown canopy and forestfloor cover. the results from pearson test showed that there was significant correlation between amount ofsoil erosion and longitudinal slope of skid trails, soil texture and forest floor cover (?= 0.01 and ?= 0.05),but there was no significant correlation between amount of soil erosion and crown canopy. the results ofthis research showed that by increasing longitudinal slope of skid trail, displaced soil volume and ruttingdepth increased. the sample plots in longitudinal slope class of > 25% and average displaced soil volumeof 5.3 m3 had maximum disturbance. mean comparison test also showed that there were no significantdifferences in the displaced soil volume in the two longitudinal slope classes (0-15 and 15-25%), but withan increase in longitudinal slope (more than 25%), the average displaced soil volume increased.
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کلیدواژه
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Water Erosion ,Soil Displacement ,Rutting ,Skid Trail ,Iran
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آدرس
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دانشگاه گیلان, ایران, دانشگاه گیلان, ایران, اداره کل منابع طبیعی استان گیلان, ایران
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Authors
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