Kargar, Mohammadreza, Babaei, Younes, Bonyad, Amir Eslam (2021). Evaluate the accuracy of Unmanned aerial vehicles (UAV) data on the survey of dieback Buxus hyrcana (Case study: Sisangan forest park-Mazandaran). *Journal of RS and GIS for Natural Resources*, 12(2), 91-109. 10.30495/girs.2021.679275