Figure 3.8 shows, for productive land in all TSAs, the timber area by leading species in mature and immature age classes. This is due to the scarcity of fire in these areas. Conversely, species more characteristic of B.C. s interior, such as spruces and pines, display more balance between mature and immature forests due primarily to the prevalence of stand-destroying fire. Over the same period, methods used for computing volume figures changed several times. These changes tend to obscure other changes in areas and volumes resulting from forestry activities.
Some figures are unavailable for TFLs.
Figure 3.9 shows changes in area for TSAs. Figure 3.10 shows the changes in area for TFLs from 1984-1994. Figure 3.11 shows 1984-1994 changes in area for TSAs and TFLs combined. These areas were transferred to other land designations. The most obvious change is due to changes in land allocation.