Treatment of boundary line overlap in a forest-sampling simulator

Wensel, L

Treatment of boundary line overlap in a forest-sampling simulator

Author

Lee C. Wensel

Author Affiliations

Lee C. Wensel was Associate Professor of Forestry, Department of Forestry and Conservation, College of Natural Resources, University of California, Berkeley, California 94720.

Publication Information

Hilgardia 43(5):143-159. DOI:10.3733/hilg.v43n05p143. June 1975.

PDF of full article, Cite this article

Abstract

A procedure is given for treating boundary line overlap in computer simulated sampling. This procedure, referred to as algorithm EDGE, insures that each point in the rectangular population has the same probability of being included in the sample, thereby eliminating possible edge-effect bias. The effectiveness of EDGE in producing a more realistic variance/plot size relationship is demonstrated by comparing the variance functions with uncorrected samples and samples corrected using a previously reported weighting scheme.

Literature Cited

Beers T. W. The direct correction for boundary-line slopover in horizontal point sampling. Purdue Ag. Expt. Sta. Research Progress Report 1964. p.224.

Grosenbaugh L. R. Point sampling and line sampling: probability theory, geometric implications, synthesis 1958. So. For. Expt. Sta. Occ. Paper 160.

Kulow D. L. Comparison of Forest Sampling Designs. Journal of Forestry. 1966. 64(7):469-74.

O’Regan W. G., Pallet M. N. A Computer Technique for the Study of Forest Sampling Methods. For. Sci. 1965. 11(1):99-114.

Wensel Lee C. Computer Generation of Points on a Plane. Hilgardia. 1975. 43(5):131-42. DOI: 10.3733/hilg.v43n05p131 [CrossRef]

Wensel L. C., John H. H. A Statistical Procedure for Combining Different Types of Sampling. For. Sci. 1969. 15(3):307-17.

Also in this issue:

Biological control: Major emphasis in UC research

Managing yellow starthistle on rangeland

Improving orchard soil structure and water penetration

The ‘Achilles heel’ of pistachio fruit

Verticillium wilt found in southern California alfalfa

Survey detects viruses in almond, prune, and sweet cherry orchards

Intensive grazing increases beef production

Growth regulator controls tomato transplant height

Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards

Parasite tolerates other pesticides

Computerized corral feed stations for dairy cows

Tailoring Cooperative Extension programs to serve home gardeners

Several copper fungicides control olive leaf spot

Update on procedures for prospective RAWs

Computer generation of points on a plane