A Compatible Model Relating Slash Pine Plantation Survival to Density, Age, Site Index, and Type and Intensity of Thinning
Change in numbers of surviving trees in repeatedly thinned old-field slash pine plantations was found to be significantly related to age, density, site index, and level and type of thinning. A difference equation model was derived and fitted with data from 824 growth periods from 289 monumented plots. This difference equation formulation is a logical extension of prior models to now express the effects of type and level of thinning, site index, and differential age effects. It is also compatible with other models required in a useful and consistent growth and yield prediction system for thinned stands. Thinning from below in young stands tended to accelerate mortality; mortality rate was directly related to site index. These facts are accounted for by the model. Forest Sci. 31:180-189.
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Document Type: Journal Article
Affiliations: Silviculturist, USDA Forest Service, Southeastern Forest Experiment Station, Macon and Athens, GA
Publication date: 1985-03-01
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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.
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