1- General Directorate of Natural Resources and Watershed Management of Golestan Province
2- Sari Agricultural Sciences and Natural Resources University
2- Sari Agricultural Sciences and Natural Resources University
Abstract: (112 Views)
Introduction and objective: The process of converting rainfall into runoff and as a result producing sediment in an area is complex and is affected by many factors. Soil characteristics and land slope play a very important role on environmental changes, including the process of erosion and movement of soil particles. The purpose of this research is to investigate the main and mutual effect of soil and slope characteristics on runoff production, sedimentation and rut erosion in logging roads to understand the proper management of water and soil resources.
Material and Methods: This research was conducted in two parcels 106 and 107 of Loh Galikash forestry project located in Golestan, Iran. In order to investigate the amount of erosion and sedimentation in two treatment areas (chobkesh path); including the wheel track and the center of the path and comparing it with the control area (natural forest) by using the rain gauge, first, the log path was divided into five levels with a slope of less than 5, 5-10, 10-15, 15-20 and 20-25% The division and sampling of the soil was done by steel cylinders at three depths of 0-10, 10-20 and 20-30 cm from the soil surface, then using a rain simulator, precipitation was created with an intensity of 65 mm/h for 30 minutes. And the return period was 10 years.
Results: The results of analysis of variance showed that there is a significant difference between different regions in terms of soil properties and runoff production, total sediment, sediment concentration, runoff threshold, runoff coefficient, and rill erosion at a probability level of 5%. The results related to the mutual effect of soil characteristics and slope in the studied factors were significant.
Conclusion: In general, it was found that the characteristics of the soil and the slope of the skid trails had an effect on the soil erosion process, and the effectiveness of the runoff variable was more than that of the sediment.
Material and Methods: This research was conducted in two parcels 106 and 107 of Loh Galikash forestry project located in Golestan, Iran. In order to investigate the amount of erosion and sedimentation in two treatment areas (chobkesh path); including the wheel track and the center of the path and comparing it with the control area (natural forest) by using the rain gauge, first, the log path was divided into five levels with a slope of less than 5, 5-10, 10-15, 15-20 and 20-25% The division and sampling of the soil was done by steel cylinders at three depths of 0-10, 10-20 and 20-30 cm from the soil surface, then using a rain simulator, precipitation was created with an intensity of 65 mm/h for 30 minutes. And the return period was 10 years.
Results: The results of analysis of variance showed that there is a significant difference between different regions in terms of soil properties and runoff production, total sediment, sediment concentration, runoff threshold, runoff coefficient, and rill erosion at a probability level of 5%. The results related to the mutual effect of soil characteristics and slope in the studied factors were significant.
Conclusion: In general, it was found that the characteristics of the soil and the slope of the skid trails had an effect on the soil erosion process, and the effectiveness of the runoff variable was more than that of the sediment.
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