Water erosion assessment of Taleghan rod region by ICONA model

Abstract

Soil erosion is one of the most important environmental issues, agriculture and food production in the world's natural and managed ecosystems and effects to all humans, therefore, quick and timely solutions required appearing. Among these solutions is the ICONA model that is provided by the Society for Conservation of Nature Spain. Among the many methods to predict erosion using GIS and RS, the model simulation results for all accepted. This research landscape water erosion and watershed Taleghanrood examined in the form of soil erosion and Zoning shows. This model has seven steps that slope maps, geological maps and then overlay the layer of the slope and geology, soil erosion layer is prepared. In later stages, use map using remote sensing techniques and vegetation map was produced using NDVI index. Then, with overlapping layers of soil conservation, land use and vegetation map have been achieved. In the final step, layers of soil erosion and overlapping layers of soil conservation and erosion risk map of the formations. Results this study showed that the total level watershed risk class too low 9.3%, 12.7% risk classes low, 22.4% moderate risk class, 18.9% and 36.7% risk class to have high-risk class.

Keywords

• erosion
• mapping
• remote sensing
• icona
• taleghanrood