WOPR Plant Series Groups

Broad vegetation zones based on plant series groupings for anaylsis. The Plant Series Groupings provide a basis to stratify the planning area to reflect the different growing conditions. This stratification delineates four zones 1. Northern Oregon - Dominated by the Western Hemlock plant series. 2. Southern Oregon dominated by the Douglas-Fir series. 3. Tanoak series in south west Oregon. 4. Eastern Oregon forest types.BLM: (Bureau of Land Management) WOPR: (Western Oregon Plan Revision) PRMP: (Proposed Resource Management Plan) VEG: (Vegetation) Broad vegetation zones based on plant series groupings are needed for the WOPR for structural stage definition, establishing rotation length, and tree retention.