Uneven-Aged Silviculture of Longleaf Pine
نویسنده
چکیده
The use of uneven-aged silviculture has increased markedly in the past 20 years. This is especially true in the southern United States, where the use of clearcutting and planting is often viewed as a practice whose emphasis on fiber production results in unacceptable consequences for other values, such as those that benefit from maintenance of continuous forest cover over time. Public lands in general, and national forest lands in particular, have become the focal point for the replacement of clearcutting and planting with even-aged and uneven-aged reproduction cutting methods that rely on natural regeneration, and that can better achieve management goals that are defined by residual stand structure and condition rather than by harvested volume. Land managers in the southern United States are keenly interested in a renaissance for longleaf pine (Pinus palustris Mill.) (Landers et al. 1995; Barnett 1999). Of the four southern pines, longleaf pine has experienced the greatest percentage loss in forest area, from 37 million hectares prior to European colonization to approximately 2.2% of that currently (Frost this volume). That scarcity has in-
منابع مشابه
Pro-b Selection Method for Uneven-aged Management of Longleaf Pine Forests
Interest in uneven-aged silviculture has increased since advent of ecosystem management programs, which place greater emphasis on ecological values and ecosystem services while also harvesting timber from the forest. However, traditional uneven-aged approaches (e.g., BDq) are often criticized as too complex, costly, and requiring highly-trained staff. The ProportionalB method (Pro-B) addresses ...
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Aim of study: Uneven-aged (UEA) management systems can achieve multiple-use objectives, however, use of UEA techniques to manage longleaf pine (Pinus palustris Mill.) forests are still open to question, because of the species’ intolerance of competition. It was our aim to examine the influence of different levels (9.2, 13.8 and 18.4 m2 ha-1) of residual basal area (RBA) on longleaf pine seedlin...
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Longleaf pine once was present on 90 million acres of the southern landscape, ranging from coastal Virginia to east Texas and from central Florida to the mountains of Alabama. On nearly two-thirds of that area, longleaf pine grew in nearly pure (single-species) stands maintained by frequent, low-intensity surface fires of both natural and human origin. The remaining one-third of that area was s...
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Though longleaf pine (Pinus palustris Mill.) forests have been primarily managed with even-aged methods, interest is increasing in uneven-aged systems, as a means of achieving a wider range of stewardship goals. Selection silviculture has been practiced on a limited scale in longleaf pine, but difficulty with using traditional approaches and absence of an evaluation across a range of site types...
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