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Showing 1 to 16 of 16 for “"Appalachian hardwoods"”.
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A stand level multi-species growth model for Appalachian hardwoods
… distributions of thinned stands of mixed Appalachian hardwoods. The model allows prediction by species groups and diameter classes. Stand attributes ( basal area per acre, trees per acre, minimum stand diameter, and arithmetic mean dbh) were projected through time for the whole stand and …
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Using economic factors in managing Appalachian hardwoods for high quality
… variety of actual stand conditions found in the Appalachian region. The results of these simulation and sensitivity tests indicate that as PBAGI and PPD increased the various economic criteria improved in value. It is concluded that recent developments in growth and yield modeling make it …
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Development of a method for implementing group selection in Appalachian hardwoods
… for implementing group selection regeneration in Appalachian hardwoods. The diverse set of definitions of the method, and the current forest demands are combined to form a flexible system of implementation that can accommodate public as well as private forests. Group selection is used where an …
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Changes in stand structure and species diversity following clearcutting in central Appalachian hardwoods
The clearcutting of second-growth Appalachian hardwood forests may cause a reduction in species diversity of the new cohort. This study measured changes in species composition, diversity, and stand structural characteristics following clearcutting of a second-growth hardwood forest. To evaluate the …
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Evaluation of Topsoil Substitutes for Restoration of Appalachian Hardwoods on Strip Mined Land
Current surface mine reclamation in Appalachia involves returning the land to approximate original contour by grading the surface and planting grasses and early-successional trees. This results in a greatly altered ecosystem compared to the native forest that was there prior to mining. The …
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Sensitivity Analysis of the Forest Vegetation Simulator Southern Variant (FVS-Sn)for Southern Appalachian Hardwoods
… for the mixed hardwood forests of the southern Appalachian region. In this study, sensitivity analyses were performed on the FVS-Sn model using Latin hypercube sampling. Response surfaces were fitted to determine the magnitudes and directions of relationships between FVS-Sn model parameters and …
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Preservative treatment evaluation of five Appalachian wood species with four preservatives
Hardwoods have been used extensively throughout the years for many uses. In the last century, wood railway tie and bridge material has been treated almost exclusively with the preservative creosote in order to improve durability. This has led to the knowledge that hardwoods treated with creosote …
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Evaluation of the use of remotely sensed images to speciate mixed Appalachian forests
… was to determine the ability to speciate mixed Appalachian hardwood forests using the Airborne Data Acquisition and Registration (ADAR) System 1000, and to determine the optimal spatial resolution and the optimal scale of the acquired images. Digital images of a 200-ha area in west central West …
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Evaluating the feasibility of improvement thinnings for fuelwood for private non-industrial landowners in Virginia
… aspects of improvement thinnings for fuelwood in Appalachian hardwood stands. 2. determine direct net energy values from energy inputs and outputs for fuelwood harvesting in Appalachian hardwoods. The landowners decision on whether or not to thin was greatly influenced by haul distance and his …
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Carbon and nitrogen cycling in watersheds of contrasting vegetation types in the Fernow Experimental Forest, West Virginia
… Norway spruce (Picea abies) and (ii) native Appalachian hardwoods. I also investigated spatial and temporal patterns of dissolved C and N across both watersheds and identified key soil properties associated with NO3-N in soil solution and streamwater. In a third study, I performed a soil …
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An Examination of Appalachian Forest Products Exports
… of hardwood lumber manufacturers in the Appalachian Region. The objectives of this research project included determining current export experience, access and use of export development programs, key export markets, and mill production, marketing, equipment, personnel and other attributes …
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Applications of ecological modeling in managing Central Appalachian upland oak stands for old-growth characteristics
Old-growth forests provide important habitat for wildlife, support the maintenance of biodiversity and serve as control areas for scientific research. Expanding current old-growth stand area by utilizing neighboring younger, managed stands allows private landowners to meet management needs and …
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Effects of Alternative Silvicultural Treatments on Regeneration in the Southern Appalachians
Harvesting practices in the southern Appalachians have moved away from clearcutting in favor of variable retention harvesting systems. A study was initiated in 1995-8 to investigate the effects of retaining varying numbers of residual trees on regeneration in seven silvicultural treatments. A …
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Soil resource heterogeneity and site quality in Southern Appalachian hardwood forests: Impact of decomposing stumps, geology and salamander abundance
The Southern Appalachian hardwood forests contain a wide diversity of flora and fauna. Understanding processes that affect nutrient availability in these forests is essential for sound forest management. Three interconnected research projects regarding soil resource heterogeneity were designed to …
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Effects of alternative silvicultural practices on oak regeneration in the southern Appalachians
The regeneration in oak-dominated stands following five silvicultural treatments was examined on four sites in the mountains of Virginia and West Virginia. Treatments included: silvicultural clearcut, leave-tree, commercial clearcut, shelterwood, and group selection. The effects of harvesting were …
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Vegetation Responses to Seven Silvicultural Treatments in the Southern Appalachians One-Year After Harvesting
… were examined on seven sites in the southern Appalachian mountains of Virginia and West Virginia. Treatments included: 1) control, 2) understory control by herbicide, 3) group selection, 4) high-leave shelterwood, 5) low-leave shelterwood, 6) leave tree, and 7) clearcut. The effects of …