scholarly journals Determination of Fertility Rating (FR) in the 3-PG Model for Loblolly Pine Plantations in the Southeastern United States Based on Site Index

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 3002-3027 ◽  
Author(s):  
Santosh Subedi ◽  
Thomas Fox ◽  
Randolph Wynne
Keyword(s):  
United States ◽  
Loblolly Pine ◽  
Southeastern United States ◽  
Site Index ◽  
Pine Plantations

Financial Returns for Biomass on Short-Rotation Loblolly Pine Plantations in the Southeastern United States

2021 ◽  
Author(s):  
Andrew Trlica ◽  
Rachel L Cook ◽  
Timothy J Albaugh ◽  
Rajan Parajuli ◽  
David R Carter ◽  
...  
Keyword(s):  
United States ◽  
Loblolly Pine ◽  
Southeastern United States ◽  
Field Studies ◽  
Pine Plantations ◽  
Planting Density ◽  
Financial Returns ◽  
Short Rotation ◽  
Competition Control ◽  
Whole Tree

Abstract Rising demand for renewable energy has created a potential market for biomass from short-rotation pine plantations in the southeastern United States. Site preparation, competition control, fertilization, and enhanced seedling genotypes offer the landowner several variables for managing productivity, but their combined effects on financial returns are unclear. This study estimated returns from a hypothetical 10-year biomass harvest in loblolly pine plantation using field studies in the Coastal Plain of North Carolina and the Virginia Piedmont testing combinations of tree genotype, planting density, and silviculture. Although enhanced varietal genotypes could yield more biomass, open-pollinated seedlings at 1,236–1,853 trees ha−1 under operational silviculture had the greatest returns at both sites, with mean whole-tree internal rates of return of 8.3%–9.9% assuming stumpage equal to current pulpwood prices. At a 5% discount rate, break-even whole-tree stumpage at the two sites in the optimal treatments was $8.72–$9.92 Mg−1, and break-even yield was 175–177 Mg ha−1 (roughly 18 Mg ha−1 yr−1 productivity), although stumpage and yield floors were higher if only stem biomass was treated as salable. Dedicated short-rotation loblolly biomass plantations in the region are more likely to be financially attractive when site establishment and maintenance costs are minimized. Study Implications: Our study suggests that dedicated loblolly pine plantations in the US Southeast may be managed to generate positive financial yields for biomass over relatively short (10 year) rotation windows, even at lower stumpage value than at present for pulpwood in the region (<80% current). Intensive use of costly inputs like fertilizer, vigorous chemical competition control, and elite genetics in planting stock did improve biomass yields. However, the management combinations that favored the highest financial returns emphasized the least expensive open-pollinated stock, lower-input operational silviculture, and moderate-to-high planting density.

Do centers of origin have a center?

Paleobiology ◽  
1981 ◽  
Vol 7 (3) ◽  
pp. 305-307 ◽  
Author(s):  
John C. Briggs
Keyword(s):  
United States ◽  
North America ◽  
Southeastern United States ◽  
Important Criterion ◽  
Centers Of Origin ◽  
Single Region ◽  
Evolutionary Radiation ◽  
A Current ◽  
Considerable Intensity

A current question being debated with considerable intensity is whether or not certain geographic areas act as centers of evolutionary radiation and supply species to other areas that are less active or less effective in an evolutionary sense. Darwin (1859) was the first to write about centers of origin which he called “single centers of creation.” He argued that each species was first produced within a single region and that it subsequently migrated from that area as far as its powers of migration and subsistence under past and present conditions permitted. Adams (1902), in discussing the influence of the southeastern United States as a center of distribution for the flora and fauna of North America, provided a series of criteria for the determination of “centers of dispersal.” His first, and evidently most important criterion was the location of “the greatest differentiation of a type.”

Economics of intercropping loblolly pine and switchgrass for bioenergy markets in the southeastern United States

2012 ◽  
Vol 86 (2) ◽  
pp. 287-298 ◽  
Author(s):  
Andres Susaeta ◽  
Pankaj Lal ◽  
Janaki Alavalapati ◽  
Evan Mercer ◽  
Douglas Carter
Keyword(s):  
United States ◽  
Loblolly Pine ◽  
Southeastern United States

scholarly journals Coarse Woody Debris in Southern United States Loblolly Pine Plantations: From Stand-Level to Regional Scales

2011 ◽  
Vol 35 (4) ◽  
pp. 161-169 ◽  
Author(s):  
Huei-Jin Wang ◽  
Philip J. Radtke ◽  
Stephen P. Prisley
Keyword(s):  
United States ◽  
Loblolly Pine ◽  
Coarse Woody Debris ◽  
Power Plants ◽  
Woody Debris ◽  
Dry Weight ◽  
Pine Plantations ◽  
Southern United States ◽  
Carbon Equivalent ◽  
Regional Forest

Abstract Broad-scale estimates of coarse woody debris (CWD) yield across landscapes are somewhat rare, despite the importance of CWD in ecosystem functioning and its potential role in terrestrial carbon cycles. Yields of CWD were estimated at regional scales by linking a stand-level predictive model with regional forest inventory data for 11 states in the southern United States. We estimated that the accumulation of CWD in late-rotation loblolly pine plantations across the South totals 48.67 million metric tons of dry wood necromass, the carbon equivalent of 24.33 million metric tons. This represents annual CO2 emissions of 21 coal-fired power plants, or the amount of carbon sequestered each year in 7 million ha of pine forests. Confidence intervals for CWD dry weight per hectare generally did not exceed ±25% of the estimated values. Although county-level estimates were of higher uncertainty, the spatial pattern appeared to be relatively consistent with the extent of loblolly pine, with low yields near the extremes of the species' natural range and high yields in extensively forested portions of its range. Quantifying regional carbon stores of CWD with respect to stand-level management activities may improve accuracy of regional estimates and provide further insight into management effects on the carbon pool and the carbon cycle.

Absorption and translocation of [14C]glyphosate in four woody plant species

1992 ◽  
Vol 22 (6) ◽  
pp. 785-789 ◽  
Author(s):  
Thomas H. Green ◽  
Patrick J. Minogue ◽  
Charles H. Brewer ◽  
Glenn R. Glover ◽  
Dean H. Gjerstad
Keyword(s):  
United States ◽  
Loblolly Pine ◽  
Woody Plants ◽  
Woody Plant ◽  
Southeastern United States ◽  
Herbicide Tolerance ◽  
Woody Species ◽  
Red Maple ◽  
White Oak ◽  
Foliar Absorption

Absorption and translocation patterns of radio-labelled glyphosate (N-(phosphonomethyl)glycine) were examined in four species of woody plants to determine mechanisms of herbicide tolerance in species common to the southeastern United States. Loblolly pine (Pinustaeda L.) and yaupon (Ilexvomitoria (L.) Ait.), both tolerant to the herbicide, absorbed significantly less glyphosate than did red maple (Acerrubrum L.) or white oak (Quercusalba L.), indicating the importance of foliar absorption as a barrier to glyphosate entry. Although herbicide absorption was similar between the sensitive white oak and the tolerant red maple, white oak accumulated more glyphosate in the roots than did red maple, indicating that translocation patterns also contribute significantly to glyphosate tolerance in some woody species.

Site Index Curves for Loblolly Pine Plantations on Cutover Site-Prepared Lands

1985 ◽  
Vol 9 (3) ◽  
pp. 166-169 ◽  
Author(s):  
Ralph L. Amateis ◽  
Harold E. Burkhart
Keyword(s):  
Differential Equation ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Analysis Data ◽  
Site Index ◽  
Height Growth ◽  
Pine Plantations ◽  
The South ◽  
Stem Analysis ◽  
Natural Range

Abstract Stem analysis data collected from dominant and codominant loblolly pine (Pinus taeda) trees in cutover, site-prepared plantations were used to develop site index curves. The data were collected over much of the natural range of loblolly pine. A separable differential equation which expresses height growth as a function of both height and age was used to develop the site index curves. These site index curves should be applicable to loblolly pine plantations on cutover, site-prepared lands through much of the South.1

Losses of fertilizer nitrogen after a winter fertilization in three managed pine plantations of the southeastern United States

2020 ◽  
Vol 84 (2) ◽  
pp. 609-617
Author(s):  
Jay E. Raymond ◽  
Thomas R. Fox ◽  
Rachel L. Cook ◽  
Timothy J. Albaugh ◽  
Rafael Rubilar
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Pine Plantations ◽  
Fertilizer Nitrogen

Postthinning growth and yield of row-thinned and selectively thinned loblolly and slash pine plantations

1989 ◽  
Vol 19 (2) ◽  
pp. 247-256 ◽  
Author(s):  
V. C. Baldwin Jr. ◽  
D. P. Feduccia ◽  
J. D. Haywood
Keyword(s):  
Loblolly Pine ◽  
Unit Area ◽  
Basal Area ◽  
Site Index ◽  
Slash Pine ◽  
Pine Plantations ◽  
Growth And Yield ◽  
Growth Responses ◽  
Diameter Increment ◽  
Study Results

This study compared growth responses in planted loblolly pine (Pinustaeda L.) and slash pine (P. elliottii Engelm.) stands thinned by using three row-felling methods and at the same density levels, three selective felling methods. The study plots were in six plantations, aged 15–22 years, located in central Louisiana. Growth was measured 5 and 10 years after plot installation. Site index varied from 19.5 to 31.7 m (base age 50) and initial planting densities ranged from 1993 to 2989 trees/ha. Study results show there will likely be less diameter increment and less net basal area and cubic-metre volume per unit area growth and yield, and the growth will be in smaller-sized trees, if row thinning is used rather than selective thinning from below. These differences will probably be greater in slash pine plantations than in loblolly pine plantations.

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