Adjustments to Forest Inventory and Analysis Estimates of 2001 Saw-log Volumes for Kentucky PDF Download
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Author: Stanley J. Zarnoch
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 8
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Book Description
The 2001 Kentucky Forest Inventory and Analysis survey overestimated hardwood saw-log volume in tree grade 1. This occurred because 2001 field crews classified too many trees as grade 1 trees. Data collected by quality assurance crews were used to generate two types of adjustments, one based on the proportion of trees misclassified and the other on the proportion of saw-log volume misclassified. Measures of variability for the estimated proportions were based on a cluster sampling design. Both methods significantly reduced estimated saw-log volume in tree grade 1. We believe that the saw-log volume approach is superior to the tree approach, but that both approaches generate improved estimates of tree grade saw-log volumes. The standard errors of the adjustment proportions are given and can be used to calculate standard errors of the adjusted values.
Author: Stanley J. Zarnoch
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 8
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Book Description
The 2001 Kentucky Forest Inventory and Analysis survey overestimated hardwood saw-log volume in tree grade 1. This occurred because 2001 field crews classified too many trees as grade 1 trees. Data collected by quality assurance crews were used to generate two types of adjustments, one based on the proportion of trees misclassified and the other on the proportion of saw-log volume misclassified. Measures of variability for the estimated proportions were based on a cluster sampling design. Both methods significantly reduced estimated saw-log volume in tree grade 1. We believe that the saw-log volume approach is superior to the tree approach, but that both approaches generate improved estimates of tree grade saw-log volumes. The standard errors of the adjustment proportions are given and can be used to calculate standard errors of the adjusted values.
Author: Stanley J. Zarnoch
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 4
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 192
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Book Description
Author:
Publisher:
ISBN:
Category : Forest products
Languages : en
Pages : 486
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 518
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Book Description
Author: Edwin S. Miyata
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 20
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Book Description
Author: Michail Prodan
Publisher: Elsevier
ISBN: 1483156559
Category : Mathematics
Languages : en
Pages : 461
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Book Description
Forest Biometrics presents the methods of mathematical statistics and biometrics that are significant to forestry. This book explores other fields related to forestry, which are explained with the help of a large number of practical examples. Organized into 25 chapters, this book starts with an overview of the variety of data that play a significant role in forest management, including the age of trees, the damage caused by storms, the fluctuation of timber prices, bark beetle infestation, and timber volume. This text then examines the factors that are responsible for a random distribution of the values in biological experimentation. Other chapters consider the important advantages of sample surveys compared to complete enumerations, include cheaper samples, wider applicability, quick results, and greater accuracy. The final chapter deals with the factors to be considered in determining the best time for harvesting of timber. This book is a valuable resource for students, research project leaders, and practical workers.
Author: Mary D. Davis
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 158
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Author:
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 402
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Book Description
"Southern forests provide innumerable benefits. Forest scientists, managers, owners, and users have in common the desire to improve the condition of these forests and the ecosystems they support. A first step is to understand the contributions science has made and continues to make to the care and management of forests. This book represents a celebration of past accomplishments, summarizes the current state of knowledge, and creates a vision for the future of southern forestry research and management. Chapters are organized into seven sections: "Looking Back," "Productivity," "Forest Health," "Water and Soils," "Socioeconomic," "Biodiversity," and "Climate Change." Each section is preceded by a brief introductory chapter. Authors were encouraged to focus on the most important aspects of their topics; citations are included to guide readers to further information."
Author: United States. Forest Service
Publisher:
ISBN:
Category : Forest policy
Languages : en
Pages : 40
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Book Description
Combined reports of: Report to Congress and Report for the Secretary of Agriculture.
