the greatest effect in the southwestern regions of iran, is the dust the rise of northeastern iran, mirime eastern neighbors of our country, including the countries of afghanistan, pakistan, and turkmenistan, have active and dusty minerals of new and medium grade. in the southwest of afghanistan, there are two centers with a very high intensity of activity, in the northwest of pakistan there is a center with a high intensity of activity and in the north of afghanistan, in the border region of this country with the two countries of uzbekistan and turkmenistan, there is a center with medium intensity of activity. the area of ​​mossadegh bagh faiz centers in the countries of afghanistan and pakistan reaches 19 million hectares and about 18 million tons of dust towards the eastern and northeastern regions. our country has sent the two active centers located in afghanistan and adjacent to pakistan affect parts of south khorasan and sistan and baluchistan provinces in the east and southeast of iran, but now there is another important dust that exists in the northeast of our country. there is th