Author: David Alexander Hamilton Jr.
Publisher: Forgotten Books
ISBN: 9781390423839
Category : Mathematics
Languages : en
Pages : 34
Book Description
Excerpt from Modeling the Probability of Individual Tree Mortality The mortality model can be used to help schedule management activities. Stands of trees for which the model predicts high mortality rates should be considered high risk stands susceptible to insect and disease outbreaks and should be logged, salvaged, or otherwise treated before stands composed of trees with low predicted mortality rates. Mortality models also reveal relationships that may provide a better understanding of how and why mortality occurs in a stand. This information is valuable in management planning and in developing strategies to control mortality. The models discussed in this paper were developed by means of a three - step analy sis. The first step is to screen the independent variables for those that show the strongest relationships to the probability of mortality. The variables selected as most significant by the screening algorithm are used as predictors of the probability of mortality in a logistic model. The regression coefficients for this model are then estimated by a nonlinear regression program, risk (hamilton The final step, model verification, employs a chi-square statistic to evaluate the accuracy with which the proposed model predicts the mortality that occurred on an independent data set. 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.
Modeling the Probability of Individual Tree Mortality (Classic Reprint)
Author: David Alexander Hamilton Jr.
Publisher: Forgotten Books
ISBN: 9781390423839
Category : Mathematics
Languages : en
Pages : 34
Book Description
Excerpt from Modeling the Probability of Individual Tree Mortality The mortality model can be used to help schedule management activities. Stands of trees for which the model predicts high mortality rates should be considered high risk stands susceptible to insect and disease outbreaks and should be logged, salvaged, or otherwise treated before stands composed of trees with low predicted mortality rates. Mortality models also reveal relationships that may provide a better understanding of how and why mortality occurs in a stand. This information is valuable in management planning and in developing strategies to control mortality. The models discussed in this paper were developed by means of a three - step analy sis. The first step is to screen the independent variables for those that show the strongest relationships to the probability of mortality. The variables selected as most significant by the screening algorithm are used as predictors of the probability of mortality in a logistic model. The regression coefficients for this model are then estimated by a nonlinear regression program, risk (hamilton The final step, model verification, employs a chi-square statistic to evaluate the accuracy with which the proposed model predicts the mortality that occurred on an independent data set. 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.
Publisher: Forgotten Books
ISBN: 9781390423839
Category : Mathematics
Languages : en
Pages : 34
Book Description
Excerpt from Modeling the Probability of Individual Tree Mortality The mortality model can be used to help schedule management activities. Stands of trees for which the model predicts high mortality rates should be considered high risk stands susceptible to insect and disease outbreaks and should be logged, salvaged, or otherwise treated before stands composed of trees with low predicted mortality rates. Mortality models also reveal relationships that may provide a better understanding of how and why mortality occurs in a stand. This information is valuable in management planning and in developing strategies to control mortality. The models discussed in this paper were developed by means of a three - step analy sis. The first step is to screen the independent variables for those that show the strongest relationships to the probability of mortality. The variables selected as most significant by the screening algorithm are used as predictors of the probability of mortality in a logistic model. The regression coefficients for this model are then estimated by a nonlinear regression program, risk (hamilton The final step, model verification, employs a chi-square statistic to evaluate the accuracy with which the proposed model predicts the mortality that occurred on an independent data set. 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.
Modeling the Probability of Individual Tree Mortality
Author: David A. Hamilton
Publisher:
ISBN:
Category : Log-linear models
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Log-linear models
Languages : en
Pages : 28
Book Description
Modeling the Probability of Individual Tree Mortality
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Modeling the Probability of Individual Tree Mortality
Author: David Alexander Hamilton
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 0
Book Description
Modeling the Probability of Individual Tree Mortality
Author: D.A. Jr Hamilton
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Individual-tree Probability of Survival Model for the Northeastern United States
Author: Richard M. Teck
Publisher:
ISBN:
Category : Forest productivity
Languages : en
Pages : 16
Book Description
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.
Publisher:
ISBN:
Category : Forest productivity
Languages : en
Pages : 16
Book Description
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.
A Structural Based Prediction System for Modelling Tree Mortality
Author: Clara Antón Fernández
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 58
Book Description
Predicting the Probability of Individual Tree Mortality for Seven Major Commercial Species in South/central Idaho
Author: Jessica Mae Josephs
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 98
Book Description
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 98
Book Description
Predicting Individual Tree Mortality Using Crown and Damage Characteristics
Author: Joseph A. Donnegan
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 1
Book Description
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 1
Book Description
Individual Tree Mortality Models for the North Coast Region of California
Author: Bruce Krumland
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description