Forest Units Clause Samples

Forest Units. A forest unit is an aggregation of forest stands for management purposes that have similar species composition, develop in a similar manner (both naturally and in response to silvicultural treatments), and are managed under the same silvicultural system. Determination of forest units is based on considerations such as site, economics and product requirements. For each forest unit, the natural development of the forest over time can be predicted and expressed graphically using forest development information in the form of yield curves. Forest unit classification applies to the entire productive forest land base of the planning area. Forest unit classifications are also the unit of measure with respect to setting targets and reporting levels of achievement for harvesting and renewal. A total of eleven forest units were used for describing the planning area land base. They are summarized in Table 5 and listed below for reference. Table 6 describes the percentage contribution to total productive area and volume by forest unit.