تعیین سرعت آستانه فرسایش بادی در کانون‌های احتمالی گرد و غبار در استان بوشهر

Considering the location of Bushehr province in arid and semi-arid region and the occurrence of dust storms in this region, this research was conducted with the aim of soil sensitivity to wind blowing and measuring the speed of wind erosion threshold in Bushehr province. Untouched samples from 22 selected stations from 7 desert cities of Bushehr province with the aim of determining the indicators of observational erosion threshold speed (meters per second), computational threshold speed (meters per second) and total wind erosion (kilograms per square meter per minute) ) was collected in three classes of 15, 20 and 25 m/s. The results showed that the lowest observed and calculated wind erosion threshold speed (5 and 6 m/s) belongs to the village of Pahlavan-kashi and pasture land from Gregor Center in Tangistan city and the highest (15 and 19.1 m/s) It belongs to the abandoned lands on the Kobegan road and the shrimp breeding sites from Ganaveh city center and Bushehr center. Also, the highest wind speed (47.7 and 31.6 kg/m2/min) is in the areas with the lowest wind erosion threshold speed (6 m/s) related to hand-sowing pastures and the lowest wind speed (0.36-1 kg/m2/min) ) in areas with the highest erosion threshold speed (15 m/s) is related to shrimp farming sites and abandoned pastures in the region. According to the results, the studied areas are considered as important internal centers of dust, which requires management measures to control the collection centers.