Forest Cover Inventories

Forest Resources Commission (FRC) recommended a review of the provincial resource inventory process in its 1991 report The Future of our Forests. The result was the Vegetation Resources Inventory (VRI). The VRI is a photo-based, two-phased vegetation inventory design consisting of:

  • Phase 1: Photo Interpretation – Photo interpretation involves estimating vegetation polygon characteristics from existing information, aerial photography or other sources. No sampling is done.
  • Phase 2: Ground Sampling – Ground Sampling phase uses mandatory Net Volume Adjustment Factor (NVAF) sampling to help calculate inventory adjustment factors.
  • Forest Inventory UpdateThe Forest Inventory is updated annually for new Inventories, depletion, regeneration and Free Growing declarations, as well as wildfires and other natural disturbance to the landbase.