**20. Suggestion**

The independent variables which were studied in this research explain only part of sediment production of loesses. Therefore, is necessary that in future researches, the role of Micro-organisms, Atterberg Limits and aggregate stability would also be studied. With regard to chemical properties of loesses and their erodibility, finding suitable measures for decreasing erosion and runoff through selection of suitable chemical fertilizers in cultivated lands which cause improvement of chemical characteristics of loesses, is recommendable. Performing landuse Planning on loesses and investigating economical and social conditions of the region for adjusting present landuses with the capability of loess are also important. Development of agro-forestry is also an effective way to control erosion of loesses.
