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Excerpt from A Field Test of Point-Sample Cruising
In most tests that have shown good results in using wedge-prisms, marginal or doubtful trees have been carefully checked by measuring their diameter and distance from the sample point. However, the usual recommendation for extensive cruises is to tally such trees separately and add half of their total to the sample. Whether an optical illusion might cause the ratio of ins to outs to be other than 50-50 has never been checked so far as I know.
In addition to testing techniques of application, a study of point-sampling should also provide information helpful in designing timber cruises to meet specified limits of accuracy. By relating coefficients of variation for point sampling to those for conventional plot procedures, the experience data from the older techniques can be made available for designing point-sample cruises.
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A Field Test of Point-Sample Cruising (Classic Reprint)
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Paperback. Condizione: New. Print on Demand. This book presents a detailed field study of point-sample cruising, a selective timber surveying method deployed in the US. The study was a joint effort between two entities; the Intermountain Forest and Range Experiment Station and Region 1 of the US Forest Service. Point-sample cruising is established as a reliable timber inventory technique, with the correct application and accurate data compilation. The author presents an analysis of a test of point-sampling compared with plot sampling in southeast Texas, which underscores that this technique, used correctly and with results compiled properly, can be used effectively for reliable timber surveys. A variable plot method of sampling forest stands is described, demonstrating how it can yield more stand information for a given cost than plot cruises. Furthermore, this book examines different methods for applying point-sampling to other stand conditions. It offers a study of techniques for applying point-sampling to other stand conditions. The research presented can be used to establish guidelines for point-sampling in the northern Rocky Mountains. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9780366967667_0
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