بررسی سهم هر یک از فرآیندهای فرسایش بین‌شیاری در بافت و شدت‌های مختلف باران

The process of separation of soil particles by raindrops and surface runoff (interrill erosion) plays an essential role in reducing soil fertility. This research was conducted in order to investigate the contribution of each of the interrill erosion processes in the soils of the semi-arid region. Testing in eight soil textures in four slopes (zero, 10, 20 and 30%) under rains with intensity of 10, 20 and 30 mm/h and in three Replication was performed with a total of 576 test units. Raindrop Detachment and Transport (RD-ST), Raindrop Detachment with Rain Flow Transport (RD-RIFT), Raindrop Detachment with Water Flow Transport (RD-FT) and Water Flow Detachment and Transport (FD- FT) were determined. The results showed that the contribution of each of the inter-furrow erosion processes in different soils in all soil textures, the raindrop separation process by water flow (RD-FT) has the highest contribution (80% on average) and the RD-RIFT process has the lowest. It had the share (5.98% on average) among the processes of interstellar erosion. Also, after this process, the process of separation of water flow by transport by water flow (FD-FT) ranked second in all soil textures except sandy texture.