In:
AGROFOR, National and University Library of the Republic of Srpska, Vol. 1, No. 1 ( 2016-11-28)
Abstract:
Nowadays watershed and rangeland management projects play the important rolein water resources and soil management worldwide. Although watershed andrangeland management projects have the considerable importance as approaches torural areas development and natural resources management, more studies havebeen focused on their effects on sediment and their effects on soil erosion haverarely been considered. The present study was conducted in two treated and controlsub-watersheds with exclosure treatment and under grazing respectively, inKhamsan representative watershed with an area of 4337.27 ha in south ofKurdistan Province, Iran. Three plots were installed in each western, northern andeastern slopes for the runoff volume and coefficient, sediment concentration andsoil loss measurement. The exclosure treatment was operated for installed plots intreated sub-watershed from 2007. Then, all the data of runoff volume andcoefficient, sediment concentration and soil loss from USLE standard plots in bothcontrol and treated sub-watersheds for 52 events over the years 2009 to 2014 werecompared and evaluated. Therefore, in order to the number of plots and subwatersheds,18 USLE standard plot data were finally recorded and analysed foreach storm event. The results showed the significant (p≤0.05) decreasing effect ofexclosure treatment on runoff volume, sediment concentration and soil loss at plotscale. Finally, decreasing rates of 15.68, 6.13, 16.67, 24.37 and 21.43% due toexclosure respectively for runoff volume and coefficient, sediment concentration,soil loss and sediment yield were obtained. The variables of runoff volume, soilloss and sediment yield had statistically significant differences (p≤0.05) in treatedand control sub-watersheds. The sediment concentration variable had p value of0.058 and therefore the effect of exclosure treatment on sediment concentrationwas also significant (p≤0.06).
Type of Medium:
Online Resource
ISSN:
2490-3442
,
2490-3434
DOI:
10.7251/AGRENG1601049D
Language:
Unknown
Publisher:
National and University Library of the Republic of Srpska
Publication Date:
2016
detail.hit.zdb_id:
2918500-2
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