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Before being used in scientific investigations and policy described. The objective of this article is to elucidate these fundamental structures. We describe the three basic com-decisions, thematic maps constructed from remotely sensed data should be subjected to a statistically rigorous accu-ponents of an accuracy assessment, the sampling design, the(More)
________________________________________ This General Technical Report (GTR) addresses monitoring strategies for terrestrial animals and habitats. It focuses on monitoring associated with National Forest Management Act planning and is intended to apply primarily to monitoring efforts that are broader than individual National Forests. Primary topics covered(More)
A conceptual framework is given for a broad-scale survey of forest health that accomplishes three objectives: generate descriptive statistics; detect changes in such statistics; and simplify analytical inferences that identify, and possibly establish cause-effect relationships. Our paper discusses the development of sampling schemes to satisfy these three(More)
1992. Evaluation of weighted regression and sample size in developing a taper model for loblolly pine. A stem profile model, fit using pseudo-likelihood weighted regression, was used to estimate mer-chantable volume of loblolly pine (Pinus taeda L.) in the southeast. The weighted regression increased model fit marginally, but did not substantially increase(More)
In this study a cross-correlation statistic is used to analyse the spatial relationship among stand characteristics of natural, undisturbed shortleaf pine stands sampled during 1961–72 and 1972–82 in northern Georgia. Stand characteristics included stand age, site index, tree density, hardwood competition, and mortality. In each time period, the spatial(More)
You may order additional copies of this publication by sending your mailing information in label form through one of the following media. Please specify the publication title and series number. Abstract Numerous government surveys of natural resources use Post-Stratifi cation to improve statistical effi ciency, where strata are defi ned by full-coverage,(More)
Previous This file was created by scanning the printed publication. Mis-scans identified by the software have been corrected; however, some errors may remain. ABSTRACT Updating of forest inventory estimates is done because full-scale inventories are too expensive to be conducted as frequently as information is needed. There are many tools and techniques(More)