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首页> 美国政府科技报告 >Rate of Value Change in Pennsylvania Timber Stands
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Rate of Value Change in Pennsylvania Timber Stands

机译：宾夕法尼亚木材林分的价值变化率

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Data from remeasured Pennsylvania forest inventory plots revealed that during a 13-year period the compound rate of value change in uncut hardwood forest stands was 4.7 percent, and ranged from -5.5 to 18.8 percent. No well-defined means for predicting a stand's rate of value change could be identified. However, some measures of initial stand condition can be used to get a general indication of what to expect in stands with management potential. For example, stands with the highest rates of value change (averaging 7.5 percent) have (1) Tree of average basal area less than 5 inches in diameter; (2) less than 10 percent of their basal area in large sawtimber-size trees; and (3) some yellow-poplar, northern red oak, and/or black oak.

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