Growth, Mortality, and Regeneration After Cutting in Loblolly Pine Pulpwood Stands (Classic Reprint) PDF Download
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Author: T. A. McClay
Publisher: Forgotten Books
ISBN: 9780428166908
Category : Business & Economics
Languages : en
Pages : 24
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Book Description
Excerpt from Growth, Mortality, and Regeneration After Cutting in Loblolly Pine Pulpwood Stands Good forest management policy today would not accept the rather crude short-rotation cutting methods as practiced in this early study. New methods of seed-tree selection and stimulation, seedbed preparation, and control of inferior understory species are some of the techniques considered advisable to secure satisfactory regeneration. However, there are large acreages of loblolly pine stands not under intensive management which are still being cut by some of the methods practiced in this study. The records of growth, mortality, and regeneration during the 9-year period following cutting by the six methods tested provide some useful information regarding these stands. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: T. A. McClay
Publisher: Forgotten Books
ISBN: 9780428166908
Category : Business & Economics
Languages : en
Pages : 24
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Book Description
Excerpt from Growth, Mortality, and Regeneration After Cutting in Loblolly Pine Pulpwood Stands Good forest management policy today would not accept the rather crude short-rotation cutting methods as practiced in this early study. New methods of seed-tree selection and stimulation, seedbed preparation, and control of inferior understory species are some of the techniques considered advisable to secure satisfactory regeneration. However, there are large acreages of loblolly pine stands not under intensive management which are still being cut by some of the methods practiced in this study. The records of growth, mortality, and regeneration during the 9-year period following cutting by the six methods tested provide some useful information regarding these stands. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: T. A. McClay
Publisher:
ISBN:
Category : Forest regeneration
Languages : en
Pages : 15
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Book Description
Author: T. A. McClay
Publisher:
ISBN:
Category : Forest regeneration
Languages : en
Pages : 15
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Book Description
Author: Karl Frederick Wenger
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 84
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Book Description
Author: Southeastern Forest Experiment Station (Asheville, N.C.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 108
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Book Description
Author: Ching-Rong Lin
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 16
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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.
Author: Southeastern Forest Experiment Station (Asheville, N.C.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 308
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Book Description
Author: Silas Little
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 20
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Book Description
S2There are several questions besides economic feasibility that need to be answered before row thinning can be recommended for loblolly pine stands. These include: Will automatic spacing remove too many of the better trees and leave too few good-quality crop trees? Will row thinning result in significant increases in wind or snow damage? What effect will row thinning have on growth and yield? What row interval is best from the standpoint of (1) quality and number of crop trees left, and (2) growth of these trees and of the stand as a whole? Will such thinning result in the development of trees that are suitable only for sawtimber but not suitable for piling? To answer these questions, the Maryland Department of Forests and Parks and the Northeastern Forest Experiment Station of the U.S. Forest Service started a study of row thinnings in 1954. The first 5-year results are described in this report.S3.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1042
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 192
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Book Description
