Unsuitable positioning in national and regional development plans and projects in Iran results in irreversible spending of budget and time mainly. The aim of this study is to decline the costs and loss of opportunities, using a model that can effectively reduce the erro
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Unsuitable positioning in national and regional development plans and projects in Iran results in irreversible spending of budget and time mainly. The aim of this study is to decline the costs and loss of opportunities, using a model that can effectively reduce the error of expert. This study was performed in the Ghourchay Ramian basin. Firstly, distinct scenarios and conceptual and tree model were created for biological and mechanical measures (masonry corrective dams). Then the constraints and vector maps entered into the SMCE in ILWIS®3.7. Constraints (slope, land use, soil and streams) with Boolean method and factors (slope, height, soil, soil erosion, land use and proximity to road, village, fault, rock sources and landslide) with Fuzzy method (benefit, cost and compound methods) have been standardized. Then weighting of factors performed using the results of questionnaires and expert opinions with procedures as ranking, pairwise comparisons and direct method. Validity and reliability of the questionnaire, was controlled. Results showed that four ranking, which was specified in priority map, in biological plans, places with first priority allocated 0.73 to 0.97 scores and over 3 km of waterways and in dam and concrete plans, 0.65 to 0.86 and an area of 2470 hectares, respectively. The model type is logical and uses logical and optimization principles not experimental principles. So there was no try to test it with the previous schemes were implemented. Projects that many errors because lack of the possibility of combining several criteria and GIS advanced techniques. Finally, it was suggested that due to the high performance of this model for evaluating watershed management projects and prediction of projects for implementation, this model will be used in the same watersheds in the country.
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