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Long-term remeasurement data were used to evaluate different approaches to predicting basal area growth in thinned slash pine (Pinus elliottii Engelm.) plantation plots at four locations in South Africa. These data clearly indicated that a single projection model for both unthinned and thinned plantation plots, based on basal area and age at the start of the projection period, was inappropriate. Precision of the basal area projections were improved significantly when a measure of the thinning intensity was included in this model. Even better projections of basal area growth in thinned plots were obtained with an approach that utilized an index of suppression to modify the expected growth in comparable unthinned stands. Forest Sci. 31:731-741.
Employee of I. T. T. Rayonier at Fernandina Beach, FL
Publication date: September 1, 1985
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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.