The reflection method of line intercept sampling to eliminate boundary bias |
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Authors: | Timothy G Gregoire Nicholas S Monkevich |
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Institution: | (1) College of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University, 24061-0324 Blacksburg, VA, USA |
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Abstract: | When a line transect overlaps the boundary of the sampled region, it can be reflected back on top of itself into the region, thereby making it possible to include elements near the edge twice from the same transect. A practical advantage of doing so is the reduction of field time and effort compared to the customary procedure of folding the transect back into another part of the region. An estimator is presented which accounts for this procedure in a way that preserves design-unbiased estimation. |
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Keywords: | line transects line intersect sampling mirage method |
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