According to the general status exponentially from the high trees in the absolute change in amplitude (ΔH) at baseline age, to determine the level of farm management
Status index distance is generally determined by the absolute change of tree height (H) at the base age of the tree species, and the level of forest farm operation
The site index interval is generally determined by the absolute change range of tree height (Δ h) and the management level of the forest farm when the tree species is at the base age<br>