Document Type : Research Paper
Authors
Abstract
Composing multi criteria and factors and do right decision making in rangelands for Biological soil Erosion Control is very complicate and strongly need to apply computer and spatial decision support systems. With these and experience a decision maker can show the best solution fast. Hable Roud watershed had many spatial data that provided by companies and organizations. Rangelands in this watershed were selected. A model for compositing the natural suitable spatial factors (sediment discharge, slope, rainfall, Range Factors: animal unit month, range trend, range condition), economic (proximity to road, proximity to villages, proximity to rivers, proximity to wells, proximity to spring) and constraints (slope, land use, village, roads, rivers, and rainfall shortage) was designed for suitable biological soil erosion control planning. Then they were standardized in value range between 0 & 1. they were weighted by analytical hierarchical processing (AHP). Of course some cases were weighted by direct method. Compositing of these layers were done by spatial multi criteria evaluation (SMCE). Output was composite index map. This map was classified by its histogram, and identified in each class which measure should be done. Biological soil erosion control plan was recommended (manure spreading, seeding with manure spreading, seedling and enclosure).
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