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Basal Area and Volume Development of Natural Even-Aged Shortleaf Pine Stands in the Ouachita Mountains

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Shortleaf pine (Pinus echinata Mill.) stands, average age 41 years, were thinned to different density levels (45 to 125 ft² of basal area in increments of 20 ft²). The stands received no further thinning. Equations for projected volumes and basal area per acre given initial conditions were formulated and fitted. The following trends were observed using the equations. Over a 24-year period, total basal area growth per acre started out over 2 ft² and had declined to less than 2 ft² by the end. Annual basal area growth had already culminated by age 41. Total annual cubic-foot volume growth per acre depended largely on initial stocking. The initial stocking and subsequent growth of the sawtimber portion were not related to the thinning treatments. Although sawtimber periodic annual cubic-foot growth culminated during the period under study, board-foot growth did not, indicating that mean annual increment for board-foot volumes had not culminated by age 64. South. J. Appl. For. 16(1):30-34.
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Document Type: Journal Article

Affiliations: Department of Forestry, Oklahoma State University, Stillwater, OK 74078-0491

Publication date: 1992-02-01

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