Uneven-aged Silviculture for the Loblolly and Shortleaf Pine Forest Cover Types PDF Download
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Author: James B. Baker
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 76
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Book Description
A half-century of experience and research with uneven-aged silviculture in loblolly-shortleaf pine stands in the South are summarized in this publication, and silvicultural guidelines for developing and managing uneven-aged stands are provided.
Author: James B. Baker
Publisher:
ISBN:
Category : Loblolly pine
Languages : en
Pages : 76
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Book Description
A half-century of experience and research with uneven-aged silviculture in loblolly-shortleaf pine stands in the South are summarized in this publication, and silvicultural guidelines for developing and managing uneven-aged stands are provided.
Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 48
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Book Description
Interest in appropriate management approaches for sustaining longleaf pine (Pinus palustris Mill.) forests has increased substantially during the recent decade. Although long-leaf pine can be managed using even-aged techniques, interest in uneven-aged methods has grown significantly as a result of concern for sustaining the wide range of ecological values associated with maintaining continuous crown cover in these ecosystems. Indeed, land managers have recently sought to restore and sustain the many habitat attributes upon which numerous at-risk species depend, while simultaneously producing high-quality wood products from longleaf pine forest ecosystems. Although earlier research produced a substantial body of knowledge to guide even-aged management, less is known about application of uneven-aged management methods in longleaf pine forests. Much of this information is yet in the developmental staage. However, managers from the Florida Division of Forestry and Florida National Forests, having a keen interest in applying what is currently known, encouraged scientists of the U.S. Department of Agriculture Forest Service, Southern Research Station and faculty members from the School of Forest Resources and Conservation at the University of Florida to engage in a dialogue that focused on addressing 60 of their key questions concerning uneven-aged management of longleaf pine. This dialogue addresses issues related to (1) methods for converting even-aged to uneven-aged stands, (2) growth and yield, (3) selection harvest techniques, (4) optimum logging practices, (5) effects on red-cockaded woodpeckers (Picoides borealis), (6) prescribed burning approaches, (7) regeneration, (8) optimum stand structure, (9) competition tolerance and release of various seedling age classes, and (10) the viability of interplanting and underplanting.
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:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 644
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 632
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Book Description
Author: James D. Haywood
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 634
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Book Description
Author: Robert M. Farrar
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 70
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Book Description
Author: Thomas A. Waldrop
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 644
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Book Description
Author: Klaus von Gadow
Publisher: Springer Science & Business Media
ISBN: 940159886X
Category : Technology & Engineering
Languages : en
Pages : 353
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Book Description
The large-scale application of new silvicultural systems has become a political reality in many parts of the world. This involves a gradual transformation of traditional silvicultural practice towards Continuous Cover Forestry, also known as near-natural forest management, favouring mixed uneven-aged stands, site-adapted tree species and selective harvesting. Selective harvesting systems have a long tradition. Specific CCF-related resource assessment, forecasting and sustainable harvest control techniques have been developed, but details about their use are not widely known. The objective of this volume is to present state-of-the-art research results and techniques relating to CCF management with an emphasis on systems engineering and modelling. Using a very simple classification based on the development of timber volume over age or time we may distinguish two types of sustainable forest management systems. Rotation forest management (RFM) systems, characterized by standard silvicultural treatments and repetitive cycles of clearfelling followed by planting; and continuous cover forestry (CCF) systems which are characterized by selective harvesting and natural regeneration, resulting in uneven-aged structures and frequently also in multi-species forests. The distinction is usually the result of decisions relating to the cost of timber harvesting, simplicity of management, or various intangible benefits. The oldest and most perfect examples of CCF systems are the so called plenter selection forests found in France, Switzerland, Slowenia and Germany. Today, CCF systems are encountered in various regions of Europe, North America and in some tropical and sub-tropical forests of South Africa, Asia and South America.
Author: Kristina Frances Connor
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 652
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Book Description
