Method for Estimating Bole Volume
Use of order statistics and of "jackknifing" in the second phase of double sampling can increase the accuracy and precision of regression estimates. This approach is especially useful for volume estimation where the cost ratio and the correlation between volume determination and diameter measurement are high. Spacing of the selected and ranked sample is at the optimum when both volume and diameter are normally distributed. The advantages and superiority of the procedure may diminish if the assumptions of normality and high correlation are not met. The additional costs of ranking and sample selection should be justified by the improved efficiency. Other potential applications include biomass studies and combined aerial photographic and field inventory.
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Document Type: Journal Article
Affiliations: Professor, Department of Forestry, Southern Illinois University, Carbondale 62901
Publication date: 1983-04-01
2016 Impact Factor: 1.675 (Rank 20/64 in forestry)
Average time from submission to first decision: 39.6 days*
June 1, 2016 to Feb. 28, 2017
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