عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this paper, compared applicability stepwise and logistic multivariate regression, two hazard statistical analysis methods in order to determine suitable model for gully erosion hazard management of Naghan inter basin. First, Gullies was mapped through field observation, using native and agency watershed management information’s and using GPS set. Through reviewing literature and studying conditions of Naghan inter basin, 15 factors elevation, slope, aspect, lithology, temperature, distance from road, land use, precipitation amount and soil forming factor include soil texture, soil depth, organic carbon, Caco3, EC, pH and hydrological group were chosen as effective factors on gully erosion and relative hazard map was prepared via 2 models. Qs and ROC indexes was used for evaluation of models accuracy. Stepwise multivariate regression model is selected as suitable model for Naghan inter basin with ROC equal to 0.876. Results show that about 31% of the watershed area was located in high and very high hazard classes.