Sampling in Forest Inventories

In sampling, a part of a population is selected and used to obtain estimates of characteristics of that population. The current chapter gives an overview on sampling methods applied in the scope of forest inventories, describes their general approaches and estimation procedures, and discusses advantages and disadvantages of the individual designs. Fixed area plots and point sampling for the selection of trees on sampling units are presented. Alternative designs for the estimation of change by sampling on successive occasions are introduced. The final section gives an overview of sampling and non-sampling errors occurring in forests surveys.

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Sampling in Forest Inventories

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Notes

A synonym for sampling units is the term sampling elements (or simply elements). n! = n(n − 1)(n − 2)…(1) and 0! = 1. The term “sampling error” is sometimes used as a synonym for standard error.

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Authors and Affiliations

  1. Center for Wood Sciences, Institute of World Forestry, University of Hamburg, Leuschnerstrasse 91, Hamburg, 21031, Germany Michael Köhl
  2. Natural Resources Canada, Victoria, Canada Steen Magnussen
  1. Michael Köhl