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Full-Text Articles in Forest Sciences
Vegetative Comunitiy Development Over 30 Years Within Pine Plantations On Reclaimed Mine Land In East Texas., Christy Christian, Brian P. Oswald, Hans M. Williams, Kenneth W. Farrish
Vegetative Comunitiy Development Over 30 Years Within Pine Plantations On Reclaimed Mine Land In East Texas., Christy Christian, Brian P. Oswald, Hans M. Williams, Kenneth W. Farrish
Faculty Publications
No abstract provided.
Loblolly Pine Growth Patterns On Reclaimed Mineland: Allometry, Biomass, And Volume, Jeremy Priest, Jeremy Stovall, Dean Coble, Brian Oswald, Hans Williams
Loblolly Pine Growth Patterns On Reclaimed Mineland: Allometry, Biomass, And Volume, Jeremy Priest, Jeremy Stovall, Dean Coble, Brian Oswald, Hans Williams
Faculty Publications
Surface lignite coal mines in east Texas are commonly reforested using loblolly pine (Pinus taeda L.) following mining and reclamation activities. Due to the nature of such an extreme disturbance, altered growth patterns, growth rates, and productivity could be expected. We destructively sampled above- and belowground tissue to develop prediction equations specific to these sites. These prediction equations differed statistically from those found in the literature regarding unmined land. At the stand level, biomass and volume productivity appeared similar with young stands on reclaimed mineland performing slightly poorer than similarly managed unmined sites. Allometric partitioning of above- and belowground biomass …
A Mixed-Effects Height-Diameter Model For Individual Loblolly And Slash Pine Trees In East Texas, Dean W. Coble, Young Jin Lee
A Mixed-Effects Height-Diameter Model For Individual Loblolly And Slash Pine Trees In East Texas, Dean W. Coble, Young Jin Lee
Faculty Publications
A new mixed-effects model was developed that predicts individual-tree total height for loblolly (Pinus taeda) and slash pine (Pinus elliottii) as a function of individual-tree diameter (in.), dominant height (ft), quadratic mean diameter (in.), and maximum stand diameter (in.). Data from 119,983 loblolly pine and 42,697 slash pine height– diameter observations collected on 185 loblolly pine and 84 slash pine permanent plots located in plantations throughout East Texas were used for model fitting. This new model is an improvement over earlier models fit with ordinary least squares, in that it can be calibrated to a new stand with observed height– …
A New Whole-Stand Model For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble
A New Whole-Stand Model For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble
Faculty Publications
A new compatible whole-stand growth-and-yield model to predict total tree cubic-foot volume per acre yield (outside and inside bark) was developed for unmanaged loblolly pine (Pinus taeda) and slash pine (Pinus elliottii) plantations in East Texas. This model was compared with the noncompatible whole-stand model of Lenhart (Lenhart, 1996, Total and partial stand-level yield prediction for loblolly and slash pine plantations in east Texas, South. J. Appl. For. 20(1):36–41) and the Lenhart (1996) model refit to current data. For the two species, all three models were evaluated with independent observed data. The model developed in this study outperformed both Lenhart …
Survival Of Longleaf And Loblolly Pines Planted At Two Spacings In An East Texas Bahiagrass Silvopasture, Brian P. Oswald, Kenneth W. Farrish, Micah-John Beierle
Survival Of Longleaf And Loblolly Pines Planted At Two Spacings In An East Texas Bahiagrass Silvopasture, Brian P. Oswald, Kenneth W. Farrish, Micah-John Beierle
Faculty Publications
The practice of combining intensive timber and forage production on the same site, a silvopasture system, offers landowners the potential for diversification of income. The establishment of such a system in a pasture setting offers unique challenges compared with traditional timber or forage systems. In 2003, a silvopasture demonstration was established south of Carthage, Texas, in a pasture dominated by bahiagrass (Paspalum notatum). Four replications of treatments composed of open pasture, longleaf (Pinus palustris) and loblolly (Pinus taeda) pine planted at a traditional spacing, and longleaf and loblolly pine planted at a silvopasture spacing were established. Due to high mortality …
Compatible Cubic-Foot Stem Volume And Upper-Stem Diameter Equations For Semi-Intensive Plantation Grown Loblolly Pine Trees In East Texas, Dean W. Coble, Keith Hilpp
Compatible Cubic-Foot Stem Volume And Upper-Stem Diameter Equations For Semi-Intensive Plantation Grown Loblolly Pine Trees In East Texas, Dean W. Coble, Keith Hilpp
Faculty Publications
The Max-Burkhart taper equation was used to develop compatible taper and volume equations for semi-intensive plantation grown loblolly pine (Pinus taeda L.) trees in East Texas. Semi-intensive plantations in East Texas are characterized by some form of mechanical site preparation, a burn, possibly chemical weed control, improved seedlings if planted after 1985, and, possibly, a midrotation thinning and/or fertilization. The equations in this study were compared with those of Lenhart et al. [Lenhart, J.D., T.L. Hackett, C.J. Laman, T.J. Wiswell, and J.A. Blackard. 1987. Tree content and taper functions for loblolly and slash pine trees planted on non-old field in …
A New Diameter Distribution Model For Unmanaged Loblolly Pine Plantations In East Texas, Young Jin Lee, Dean W. Coble
A New Diameter Distribution Model For Unmanaged Loblolly Pine Plantations In East Texas, Young Jin Lee, Dean W. Coble
Faculty Publications
A parameter recovery procedure for the Weibull distribution function based on four percentile equations was used to develop a diameter distribution yield prediction model for unmanaged loblolly pine (Pinus taeda L.) plantations in East Texas. This model was compared with the diameter distribution models of Lenhart and Knowe, which have been used in East Texas. All three models were evaluated with independent observed data. The model developed in this study performed better than the other two models in prediction of trees per acre and cubic-foot volume per acre (wood and bark, excluding stump) across diameter classes. Lenhart’s model consistently underestimated …
A Survival Model For Unthinned Loblolly Pine Plantations That Incorporates Non-Planted Tree Competition, Site Quality, And Incidence Of Fusiform Rust, Dean W. Coble, Young-Jin Lee
A Survival Model For Unthinned Loblolly Pine Plantations That Incorporates Non-Planted Tree Competition, Site Quality, And Incidence Of Fusiform Rust, Dean W. Coble, Young-Jin Lee
Faculty Publications
Future biomass yields are functionally related to the number of trees surviving at a given age. A stand level survival model was developed that incorporates competition of non-planted trees, site quality, and the incidence of fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme). The model consists of a system of two equations, one of which represents the number of surviving trees infected by fusiform rust while the other represents the number of trees not infected by fusiform rust. Data from unthinned loblolly pine (Pinus taeda L.) plantations in East Texas were used to fit …
Effects Of Fall Fertilizer Applications Of Mitotic Index And Bud Dormancy Of Loblolly Pine Seedlings, Hans Michael Williams, David B. South
Effects Of Fall Fertilizer Applications Of Mitotic Index And Bud Dormancy Of Loblolly Pine Seedlings, Hans Michael Williams, David B. South
Faculty Publications
A series of studies examined the effects of fall fertilization with diammoniwn phosphate (DAP) on mitotic index and bud donnancy [as measured by mean days to budbreak (DBB)] of two half-sib seed sources of loblolly pine. The first study tested different rates of DAP (0, 67, and 202 kg Nlha), the second study compared DAP with ammoniwnnitrate, and the third study examined the effect of different application dates (September 28, October 19, and November 9). An increase in mitotic index of unfertilized seedlings was observed during October and was due to developmental activity which follows initial budset. Differences in mitotic …