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Exact expressions are given for the standard errors of the estimated basal area in plot and point sampling in certain model forests. The models are produced by a random mechanism involving an aggregation of stems in clusters. The high efficiency of point sampling in estimating basal area is confirmed from studying the standard error formulas. Additional cases, in which analytic expressions for the standard error can be found, are indicated. Forest Sci. 18:123-125.
Professor of Forest Biometry, Royal College of Forestry, S-104 05 Stockholm, Sweden
Publication date: June 1, 1972
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Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.