The phenomenon of desiccation has caused the loss of forests in the Zagros region. The purpose of the present study is to investigate the relationship between changes in dust storms using the NDDI, Ackerman, and TDI dust detection algorithms in eight major dust events during the years 2003-2016 in Chaharmahal and Bakhtiari province and in the forest areas of Abzaloo, Soh, Helen, and Shahed Jangal area using MODIS images and its impact on the decline of the Iranian oak species (Quercus branti). The NDVI index was used to assess vegetation changes, and after applying the index to the images, they were compared with each other. The trend of changes in the maps of the algorithms under study indicated an increase in dust events in the regions. Correlation analysis was used to obtain the relationship between the Ackerman, NDDI, TDI, and NDVI indices. The correlation study of dust detection algorithms and NDVI index indicated that TDI index has a higher negative correlation (-0.69) with NDVI index than the other two indices.Forest cover, especially the Iranian oak species in the Ab-Zalo region, has been most affected by dust storms. Finally, it can be concluded that one of the factors causing the decline of the Iranian oak species and forest areas in the studied areas in the long term has been dust storms, which have caused the phenomenon of drying and decline in the long term, as well as a decrease in the yield of vegetation in the region.