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Individual Tree Probability Of Survival Model For The Northeastern United States

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Individual Tree Probability Of Survival Model For The Northeastern United States

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Author : Richard M. Teck
language : en
Publisher:
Release Date : 1990

Individual Tree Probability Of Survival Model For The Northeastern United States written by Richard M. Teck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Forest productivity categories.

Describes a distance-independent individual-tree probability of survival model for the Northeastern United States. Survival is predicted using a six-parameter logistic function with species-specific coefficients. Coefficients are presented for 28 species groups. The model accounts for variability in annual survival due to species, tree size, site quality, and the tree's competitive position within the stand. Model performance is evaluated using the chi-square goodness-of-fit test. Results are presented for the calibration data and an independent validation data set. The model has been incorporated into NE-TWIGS.

Publications Of The Northeastern Forest Experiment Station 1989 And 1990

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Author : Northeastern Forest Experiment Station (Radnor, Pa.)
language : en
Publisher:
Release Date : 1992

Publications Of The Northeastern Forest Experiment Station 1989 And 1990 written by Northeastern Forest Experiment Station (Radnor, Pa.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Forests and forestry categories.

Individual Tree Diameter Growth Model For Northeastern United States

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Author : Richard M. Teck
language : en
Publisher:
Release Date : 1991

Individual Tree Diameter Growth Model For Northeastern United States written by Richard M. Teck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Forests and forestry categories.

S2Describes a species-specific, distance-independent individual-tree diameter growth model for the Northeastern United States. Diameter growth is predicted in two steps using a two parameter, sigmoidal growth function modified by a one parameter exponential decay function with species-specific coefficients. Coefficients are presented for 28 species groups. The model accounts for variability in annual diameter growth due to species, tree size, site quality, and the tree's competitive position within the stand. Model performance is evaluated using the mean predicted error and the root mean square error. Results are presented for the calibration data and an independent validation data set. The model has been, incorporated into NE-TWIGS, a computerized forest growth model for the Northeastern United States.S3.

Publications Of The Northeastern Forest Experiment Station

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Author : Northeastern Forest Experiment Station (Radnor, Pa.)
language : en
Publisher:
Release Date : 1992

Publications Of The Northeastern Forest Experiment Station written by Northeastern Forest Experiment Station (Radnor, Pa.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Forests and forestry categories.

Research Paper Ne

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Author :
language : en
Publisher:
Release Date : 1987

Research Paper Ne written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Forests and forestry categories.

Individual Tree Diameter Growth Model For The Northeastern United States

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Author : Richard M. Teck
language : en
Publisher:
Release Date : 1991

Individual Tree Diameter Growth Model For The Northeastern United States written by Richard M. Teck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Trees categories.

Factors Affecting Recreation Participation By Vermont Residents

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Author : Thomas A. More
language : en
Publisher:
Release Date : 1990

Factors Affecting Recreation Participation By Vermont Residents written by Thomas A. More and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Recreational surveys categories.

Long-term recreation planning requires an understanding of recreation participation patterns. This study examined Vermonters' participation in 27 leisure activities from three domains (outdoor, resource based, and indoor) to see how such participation differed in each domain. Indoor activities were the most popular, followed by resource-based activities and general outdoor activities. Overall participation declined with age, though this effect was mitigated somewhat for older parents. Other socioeconomic and demographic variables had limited effects on participation.