اولویت‌بندی عوامل محیطی در تخریب حوزه آبخیز اسکندری

In this research, TOPSIS and AHP methods have been used in order to prioritize the contribution of environmental factors in the destruction of the Eskandari Watershed. In this regard; four main criteria (12 sub-criteria) including: climate change, physiography, geology and tectonics were considered. Expert judgments for weighting were collected through a questionnaire with a statistical population of 28 experts and university professors. The results of the expert judgment of the decision-making group showed that the criterion of drought (0.471) in the AHP method and the criterion of changing the type of precipitation (0.555) and drought (0.555) according to the results obtained from the similarity index method have the highest priority. In the following; the results of the combination of TOPSIS and AHP methods also showed that the criteria of drought, change of precipitation type and temperature change respectively have the most contribution in the destruction of Eskandari Watershed. In this regard; According to the priority of the main criteria, the climate factor has the most effective and the physiographic factor has the least effect. So; in order to prevent further destruction and damage caused by environmental factors in the watershed, risk management and prevention of flood and drought events and flood control and spreading are suggested in the study area. The results of the present research are significant for managers and officials in order to apply proper management.