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To Stratify or Not to Stratify?

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Abstract:

The efficiency of a timber cruise is normally improved by stratified sampling, and a forest type map often provides a useful basis for stratification. Variances for forest types or strata can be derived from estimated ranges in volume per acre. These preliminary computations permit an allocation of field samples on the basis of strata variances or relative stand values rather than on the basis of stand areas. As a result, ground plots are concentrated in those stands where the greatest degree of accuracy is desired.

Document Type: Journal Article

Affiliations: Union Bag-Camp Professor of Forestry, University of Georgia, Athens

Publication date: February 1, 1964

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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