Before the 1981 growing season, a s tudy was instal led in southeastern Arkansas to examine the eflects of three dormant-season burn intervals ( low, moderate, and highfrequency) and an unburned treatment on natural regeneration in uneven-aged stands of loblolly and shortleaf pines (Pinus taeda and P. echinata, respectively) . Merchantable pine basal areas were maintained by harvest ing on a 5 ...

An ordered-probit model was developed to predict tree grade from treeand stand-level variables, some of which could be changed by management. Applied to uneven-aged mixed loblolly (Pinus tuedu L.) shortleaf pine (Pinus echinatu Mill .) stands, the model showed that the grade of pine trees was highly correlated with tree diameter, tree height, and stand basal area, in non-linear fashion. In addi...

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Tree diameter measurements are repetitive, time-consuming, and laborious but necessary to obtain the distribution of stands. provides much information for sustainable management can be predicted with high accuracy, thus saving time financial resources. Permanent sample plots that belong a permanent sampling network located in protected area South Western Carpathians Romania were used this study...