Forest Sampling Desk Reference [Kõva köide]

Designed to help forest practitioners and students choose the most appropriate sampling procedure for a given purpose, this volume explains the uses and limitations of individual forest sampling designs in forest inventory operations. Covers topics including accuracy and precision of data; symbology; averages; measures of dispersion; probability; discrete and continuous probability distributions; and sampling theory. Additional features include detailed derivations of most of the statistical methods used in forestry and a thorough treatment of systematic and other frequently used forms of sampling one resource. Requires some knowledge of differential and integral calculus and matrix algebra but the mathematical background of most forestry students should be adequate. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Should damaged trees be clear cut and replanted or allowed to recover naturally? Is the deer herd large enough to survive hunting pressure? Managing forest resources entails numerous decisions. Making these decisions intelligently requires sound information about the resource in question. Ideally, assessments should be based on the entire population involved. However, the costs in time and money often prevent this, and evaluations - or sampling - are done on a small portion of the whole.

The most complete treatment of systematic sampling in one volume, Forest Sampling Desk Reference explains the uses and limitations of individual sampling designs in forest inventory operations. This text contains detailed derivations of the most commonly used statistical methods in forestry. It provides examples that highlight the statistical methods.

The author covers probability and probability distributions and the development of logical regression models. The text discusses systematic sampling, describing its benefits and shortcomings in detail. It provides an in depth examination of the controversial 3-P sampling procedure.

The validity and strength of sampling results vary from option to option, along with their costs in terms of money and time. Before selecting a sampling procedure you need to know their strengths and weaknesses in relation to their expense. Forest Sampling Desk Reference supplies the background necessary for making these decisions.