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Efficient Sampling Grids for Timber Cruises

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Equations are provided to permit forest inventory specialists to quantitatively estimate the total field inventory travel distance, and thus time, based solely on inputs of property size, the number of inventory samples desired, and the type of systematic grid employed. Total inventory travel time is estimated for square and varying rectangular grid spacings for property sizes from 100 to 10,000 ac to estimate the time savings for rectangular grids over square grid patterns for the same number of inventory samples.

Keywords: Resource inventory; sampling efficiency; systematic sampling; timber cruising

Document Type: Regular Article

Affiliations: 1: Division of Forestry West Virginia University P.O. Box 6125 Percival Hall Morgantown WV 26506-6125 2: Ibberson Chair in Forest Resources Management, School of Forest Resources Pennsylvania State University 212 Ferguson Building University Park PA 16802

Publication date: June 1, 2004

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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