3956

3734

كارشناسي ارشد

بيابان زدايي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1386

دوازده، 68، [II]ص.: مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

حميدرضا كريم زاده

محسن شكل آبادي، فرهاد نور محمدي

26/03/87

احمد جلاليان، فرزاد روحاني

1396/03/06

كتابنامه

منابع طبيعي

مهندسي منابع طبيعي

ID3734

به فارسي و انگليسي: قابل رؤيت در نسخه ديجيتال

Abstract Gully erosion is one of the important features of soil degradation which causes huge lose ofsoil and sediment yield in different climates It often occurs in agriculture lands in Iran andtherefore degrades much amounts of the fertile agricultural land and fill up the dams and reservoirby sediment as well Owing to the important of gully erosion in Poldokhtar city located in Lorestan province Iran this research has been Conducted The relationship between the volume of sediment and soilproperties climate factors land use slope and drainage was investigated To achieve the studypurpose the area induced by gully erosion was designated and 15 axial digitated and frontalgullies were recognized The dimensions surveyed after six rains stormy occurred during the studyperiod These soil samples were also taken from the top middle and subsoil in the gully bank andsoil properties such as Texture Ec Na Ca mg SAR CaCO3 CaSO4 Organic matter wereSurveyed The relation ship between land use and volume of sediment was studied using Regression analyses and this analyses method were applied to find out the most effectivefactors on gully erosion The results have shown the no significant effect of land use on gully sediment yield Therelationship between gully frequency and slope stages shown that digitated frontal and axial gullieswere located on 0 5 5 10 and more 10 slopes And the more than 10 slopes gullies havemore sediment product and sediment yield of gullies have significant effect the axial gullies locatedon pabdeh formation and the others located on quaternary and have more sedimentation The sedimentation of texture in difference layers was silty loam loam silty clay and clay thattexture in top middle and sub soil have significant effect on sediment yield The study of soil properties shown that a top soil properties such as clay SAR sand Andgravel have significant effect but the middle and subsoil properties not The gully drainage areawith a good regression coefficient was most important factor in sediment yield and among climatefactors that affects on gully sedimentation is precipitation quantity with the regression coefficient94 the minimum amount of precipitation to provide the run off was 17mm

حميدرضا كريم زاده

محسن شكل آبادي، فرهاد نور محمدي

احمد جلاليان، فرزاد روحاني