The Relation of Growth to Stand Density in Natural Loblolly Pine Stands: 5-Year Results (Classic Reprint) PDF Download
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Author: Karl Frederick Wenger
Publisher: Forgotten Books
ISBN: 9780365302315
Category : Business & Economics
Languages : en
Pages : 20
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Book Description
Excerpt from The Relation of Growth to Stand Density in Natural Loblolly Pine Stands: 5-Year Results No curves were apparent in this study. This failure to show optimum densities may have been due to the limited range of densities sampled. To correct this condition, additional plots were thinned at the beginning of the second 5-year period, extending the range of residual densities to a very low level. With a wider range of residual densities, the chance of determining the optimum level should be much better. 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: Karl Frederick Wenger
Publisher: Forgotten Books
ISBN: 9780365302315
Category : Business & Economics
Languages : en
Pages : 20
Get Book Here
Book Description
Excerpt from The Relation of Growth to Stand Density in Natural Loblolly Pine Stands: 5-Year Results No curves were apparent in this study. This failure to show optimum densities may have been due to the limited range of densities sampled. To correct this condition, additional plots were thinned at the beginning of the second 5-year period, extending the range of residual densities to a very low level. With a wider range of residual densities, the chance of determining the optimum level should be much better. 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: KARL FREDERICK. WENGER
Publisher:
ISBN: 9781033855133
Category :
Languages : en
Pages : 0
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Book Description
Author:
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 10
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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: James D. Haywood
Publisher:
ISBN:
Category : Loblolly pines
Languages : en
Pages : 12
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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: William R Harms
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
Author: Deetlefs Philippus Petrus du Toit
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 252
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Book Description
Author:
Publisher:
ISBN:
Category : Loblolly-pine
Languages : en
Pages : 62
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Book Description
Author: E. V. Brender
Publisher: Forgotten Books
ISBN: 9780656602032
Category : Mathematics
Languages : en
Pages : 22
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Book Description
Excerpt from Influence of Loblolly Pine Overwood on Advance Reproduction At sporadic intervals, perhaps once each decade, a favorable combi nation of loblolly seed production and rainfall distribution occurs in the lower Piedmont region, with the result that pine seedling stands become established beneath overwood stands of loblolly pine. The majority of these understory pine stands are found on the flat ridge tops and on gentle to moderate slopes of southerly and westerly exposures. This advance reproduction occurs in more or less uniform age classes over contiguous areas from a few acres to as many as 100 acres, depending upon the uniformity of the topography. The overstory stands may have a stocking of 120 square feet of basal area per acre and still have a solid understory stand of loblolly pine (fig. Advance pine reproduction may also become established underneath stands as young as 20 years of age Where the overwood is less than 60 square feet of basal area (fig. The occurrence of loblolly pine reproduction as an understory has great potential value to the landowner. He has only to give it reasonable care to insure the establishment of his future stand or parts of it. Regardless of the. Landowner's method of management, thousands of acres of seedlings become established in advance of the planned reproduction cut. This applies whether the stand is to be reproduced by leaving seed trees, or by the shelter wood method, or in openings created by selective cutting, or even where the plan Specifies clear cutting and planting. Where this advance reproduction is present, the owner will not have to wait several years for the right combi nation of seedfall and rainfall, nor bear the expense of planting. In an effort to realize more fully the potential of this advance reproduction, a study was begun to determine the conditions under which these seedling stands become established and maintain themselves, and to determine the growth rates of the seedlings. 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.
