Cost-efficient and precise estimate of volumes. Provides standard protocols and reporting procedures across states, and long-term continuity. Uses numerous indicators to asses condition. Measurements are simple, quick and accurate. Most useful for high level information reporting.
Information needs to be integrated with other data sources.
Larger trees have a higher probability of selection. Requires training in selecting the appropriate prism and correcting for slope. References Avery and Burkhart 1995. Burkman 1992, USDA Forest Service 1997. Bureau of Land Management 1996, Mitchell and Hughes 1985, Nudds 1997.