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Evaluation of Oil Mulch Effect on Wind Erosion Threshold Velocity and Some of Soil Properties (Case Study: Dehloran, Ilam)

March 31, 2025

In arid and desert regions where wind erosion poses a serious threat to soil resources, the use of oil mulch has emerged as a practical and effective solution. A study conducted in the Abu-Ghoveir area of Dehloran, Iran, demonstrated that oil mulch significantly increases the wind erosion threshold velocity, thereby enhancing soil surface stability. Moreover, the application of mulch was found to reduce evaporation and retain moisture in the upper soil layers—creating favorable conditions for the natural regeneration of vegetation. The findings showed that oil mulching does not lead to harmful changes in soil chemical properties; instead, it contributes positively by regulating temperature and improving soil quality. The optimal mulch application rate was identified as 7 tons per hectare, which effectively resisted the region’s maximum wind speeds. These results clearly indicate that oil mulch application is a fast, scientifically proven, and reliable strategy for controlling wind erosion and restoring degraded ecosystems in desert areas.

 

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