Author: Neil I. Lamson
Publisher:
ISBN:
Category : Cherry
Languages : en
Pages : 12
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S2Precommercial thinning was done in a 12-year-old Appalachian hardwood sapling stand in West Virginia. Two crop-tree release techniques were used-crown touching and crown touching plus 5 feet. Results indicated that both treatments significantly increased & year d.b.h. growth for released yellow-poplar and black cherry crop trees. Although there was a major increase in d.b.h. growth, caution is suggested when using the crown-touching plus 5 feet treatment as butt-log quality response was not conclusive. Releasing crop trees with the crown-touching approach seems appropriate in sapling stands when applied to desirable stems on better sites. S3.
Author: H. Clay Smith
Publisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 12
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Author: Gayne G. Erdmann
Publisher:
ISBN:
Category : Birch
Languages : en
Pages : 16
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Author:
Publisher:
ISBN:
Category : Forest canopies
Languages : en
Pages : 92
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The Forest Inventory and Analysis (FIA) Program of the Forest Service, U.S. Department of Agriculture, conducts a national inventory of forests across the United States. A systematic subset of permanent inventory plots in 38 States is currently sampled every year for numerous forest health indicators. One of these indicators, crown-condition classification, is designed to estimate tree crown dimensions and assess the impact of crown stressors. The indicator features eight tree-level field measurements in addition to variables traditionally measured in conjunction with FIA inventories: vigor class, uncompacted live crown ratio, crown light exposure, crown position, crown density, crown dieback, foliage transparency, and crown diameter. Indicators of crown health derived from the crown data are intended for analyses at the State, regional, and national levels, and contribute to the core tabular output in standard FIA reports. Crown-condition measurements were originally implemented as part of the Forest Health Monitoring (FHM) Program in 1990. Except for crown diameter, these measurements were continued when the FIA Program assumed responsibility for FHM plot-based detection monitoring in 2000. This report describes in detail the data collection and analytical techniques recommended for crown-condition classification.
Author: Paul S Johnson
Publisher: CABI
ISBN: 1780647085
Category : Technology & Engineering
Languages : en
Pages : 645
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Book Description
The third edition of The Ecology and Silviculture of Oaks is an updated and expanded edition that explores oak forests as responsive ecosystems. New chapters emphasize the importance of fire in sustaining and managing oak forests, the effects of a changing climate, and advanced artificial regeneration techniques. This new edition expands on silvicultural methods for restoring and sustaining oak woodlands and savannahs, and on management of ecosystem services, including wildlife habitat. It also incorporates new material on evaluating landscape-scale, and cumulative effects of management action compared with inaction. Nine of the fifteen chapters cover updated information on the geographic distribution of US oaks, oak regeneration dynamics, site productivity, stocking and stand development, even- and uneven-aged silvicultural methods, and growth and yield. This edition includes a new section with colour illustrations for improved visualization of complex relationships. This book is intended for forest and wildlife managers, ecologists, silviculturists, environmentalists, and students of those fields.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1736
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 64
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 322
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Author: Kurt William Gottschalk
Publisher:
ISBN:
Category : Forest health
Languages : en
Pages : 592
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 616
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