断面积
火炬松
松属
体积热力学
临时的
林业
环境科学
基础(医学)
生物
地理
植物
生物技术
考古
物理
量子力学
胰岛素
作者
Paul A. Murphy,Robert M. Farrar
出处
期刊:Southern Journal of Applied Forestry
[Oxford University Press]
日期:1982-05-01
卷期号:6 (2): 115-119
被引量:19
摘要
Abstract Equations are presented for estimating current volume, projected basal area, and projected volume for stands of loblolly-shortleaf (Pinus taeda L.-Pinus echinata Mill.) pine managed under the selection system. The independent variables are initial stand basal area and elapsed time. The estimates should provide a guide to the cubic-foot volume production that might be expected from stands on average sites (site indices 80-90 ft.), medium basal areas (30 to 70 sq. ft.) and time periods of 10 years or less.
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