. A primer on stand and forest inventory designs. Forests and forestry Mensuration; Forest surveys. If the stands are already mapped and heights interpreted, as in the case of the stratified probability proportional to area sample, the predicted values can be directly applied and a volume map generated. The second-to-last column of Appendix 3 and figure 39 give the results of such an exercise using equation (24). This technique was used by Brickell (1984) and is an economical technique for obtain- ing stand estimates. Langley (1983) used a similar tech- nique and incorporates the results in a
. A primer on stand and forest inventory designs. Forests and forestry Mensuration; Forest surveys. If the stands are already mapped and heights interpreted, as in the case of the stratified probability proportional to area sample, the predicted values can be directly applied and a volume map generated. The second-to-last column of Appendix 3 and figure 39 give the results of such an exercise using equation (24). This technique was used by Brickell (1984) and is an economical technique for obtain- ing stand estimates. Langley (1983) used a similar tech- nique and incorporates the results in a geographic infor- mation system. Cost Estimates—The comparison of inventory design costs involving no prior mapping versus prior mapping is clear. If it is the case that mapping is never to be undertaken, then our examples indicate that the costs do not justify if for inventory alone. Overall, the actual cost incurred for inventories without mapping was less. This result may be due primarily to assumptions. However, the eventual use of an inventory by a forest manager and resource specialist virtually always requires stand mapping. Thus, the cost of mapping is just delayed, not avoided. Prior mapping is Forest Boundary 0 FEET 5000. Figure 39—Mapping showing measured (*) and predicted volumes (ccf) per acre based upon a stratified sample of stands proportional to their size and predictions base upon photo-interpreted heights of the overstory. 82. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lund, H. Gyde; Thomas, Charles E. (Charles Eugene), 1940-; United States. Forest Service. [Washington, D. C. ?] : U. S. Dept. of Agriculture, Forest Service
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