It is important to correctly estimate SI. Incorrect SI estimates can lead to a variety of problems, including:
Site index should be recorded on silviculture prescriptions (SP) and stand management prescriptions (SMP).
SI must be recorded on all legally required silviculture surveys (e.g.,stocking and free growing surveys). All small business, FRBC and government funded silviculture surveys (including I/O and M/O) should provide SI.
SI is required on all MLSIS form C submissions (Figure 2.8). It is required for all ISIS forest cover screen updates (Figure 2.9). SI is required on the FS 810A (Inventory Forest Cover Attribute Form).
SI is a requirement under the Forest Practices Code. SI is required in both the inventory and silviculture labels in regeneration and free growing survey reports (Silviculture Practices Regulation 25(b) viii and 28(1)(c)). If these labels have different leading species, two unique SI values are required for the stratum. SI is required (Silviculture Practices Regulation 26(1)(b)(4)) in the survey report that must follow intermediate harvest (e.g., commercial thinning).