Author: William C. Hopkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 125
Book Description
Relation of Certain Stand Characteristics to Quality and Value of Loblolly Pine
Author: William C. Hopkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 125
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 125
Book Description
Relationship of Stand Characteristics to Quality of Loblolly Pine
Author: William C. Hopkins
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 36
Book Description
Forest Floor in Loblolly Pine Plantations as Related to Stand Characteristics
Author: Hamlin L. Williston
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 4
Book Description
Relationships Between Tree Crown, Stem and Stand Characteristics in Loblolly Pine Plantations
Author: Peter T. Sprinz
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 444
Book Description
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 444
Book Description
Wood Quality Factors in Loblolly Pine
Author: Robert A. Megraw
Publisher: Tappi
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 112
Book Description
Publisher: Tappi
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 112
Book Description
Weight and Volume Determination for Planted Loblolly Pine in North Louisiana
Author: Ray A. Newbold
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 24
Book Description
Growth Model for Uneven-aged Loblolly Pine Stands
Author: Ching-Rong Lin
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 16
Book Description
A density-dependent matrix growth model of uneven-aged loblolly pine stands was developed with data from 991 permanent plots in the southern United States. The model predicts the number of pine, soft hardwood, and hard hardwood trees in 13 diameter classes, based on equations for ingrowth, upgrowth, and mortality. Projections of 6 to 10 years agreed with the growth of stands between the last two inventories. In 300-year simulations of undisturbed growth, softwood species were replaced by hardwoods, in accord with previous knowledge. Soft hardwood species became dominant on good sites and hard hardwoods on poor sites. Basal area oscillated over time, converging slowly towards a steady state. Changes in tree size diversity were correlated positively with basal area. Without disturbance, species diversity would decrease. For economic analysis, equations were developed to predict total tree height, sawlog length and volume, pulpwood volume, and volume of top sawtimber, as functions of tree diameter and stand basal area. Simulations of three cutting regimes showed that management would lead to a steady state faster than would natural growth. Management aimed at maintaining the current average distribution would result in size and species diversity similar to that of an unmanaged stand. From a financial point of view, the q-factor guide and a 13-in.- (330-mm-) diameter-limit cut would be superior to the average current management regime. The diameter-limit regime would have the greatest effect on lowering tree size diversity and an effect on species diversity similar to that of the q-factor guide. A computer program, SOUTHPRO, was developed to simulate the effects of other management alternatives.
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 16
Book Description
A density-dependent matrix growth model of uneven-aged loblolly pine stands was developed with data from 991 permanent plots in the southern United States. The model predicts the number of pine, soft hardwood, and hard hardwood trees in 13 diameter classes, based on equations for ingrowth, upgrowth, and mortality. Projections of 6 to 10 years agreed with the growth of stands between the last two inventories. In 300-year simulations of undisturbed growth, softwood species were replaced by hardwoods, in accord with previous knowledge. Soft hardwood species became dominant on good sites and hard hardwoods on poor sites. Basal area oscillated over time, converging slowly towards a steady state. Changes in tree size diversity were correlated positively with basal area. Without disturbance, species diversity would decrease. For economic analysis, equations were developed to predict total tree height, sawlog length and volume, pulpwood volume, and volume of top sawtimber, as functions of tree diameter and stand basal area. Simulations of three cutting regimes showed that management would lead to a steady state faster than would natural growth. Management aimed at maintaining the current average distribution would result in size and species diversity similar to that of an unmanaged stand. From a financial point of view, the q-factor guide and a 13-in.- (330-mm-) diameter-limit cut would be superior to the average current management regime. The diameter-limit regime would have the greatest effect on lowering tree size diversity and an effect on species diversity similar to that of the q-factor guide. A computer program, SOUTHPRO, was developed to simulate the effects of other management alternatives.
The Relation of Certain Forest Conditions to the Quality and Value of Second-growth Loblolly Pine Lumber
Author: Benson H. Paul
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
Book Description
Abstracts of Recent Published Material on Soil and Water Conservation
Author: United States. Agricultural Research Service. Soil and Water Conservation Research Division
Publisher:
ISBN:
Category : Soil conservation
Languages : en
Pages : 726
Book Description
Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.
Publisher:
ISBN:
Category : Soil conservation
Languages : en
Pages : 726
Book Description
Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.
The Southern Pines
Author: Harold Scofield Betts
Publisher:
ISBN:
Category : Longleaf pine
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Longleaf pine
Languages : en
Pages : 16
Book Description