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Author: Klaus von Gadow
Publisher: Springer Science & Business Media
ISBN: 9401148163
Category : Technology & Engineering
Languages : en
Pages : 222
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Book Description
In an lUlffianaged woodland, forest development follows a succession of periods of undisturbed natural growth, interrupted by intermediate loss or damage of trees caused by fire or wind or other natural hazards. In a managed woodland, the most important periodic disturbances are the thinning operations, which are often carried out at regular intervals and which usually have a significant effect on the future evolution of the resource. Thus, a realistic model of forest development includes both natural growth and thinnings. The key to successful timber management is a proper understanding of growth processes, and one of the objectives of modelling forest development is to provide the tools that enable foresters to compare alternative silvicultural treatments. Foresters need to be able to anticipate the consequences of a particular thinning operation. In most cases, total timber volume is not a very appropriate measure for quantifying growth or yields, or changes caused by thinning operations. Yield in economic terms is defined by the dimensions and quality attributes of the harvestable logs, and estimating timber products is a central issue of production-oriented growth and yield research. Introduction 2 Growth modelling is also an essential prerequisite for evaluating the consequences of a particular management action on the future development of an important natural resource, such as a woodland ecosystem.
Author: Klaus von Gadow
Publisher: Springer Science & Business Media
ISBN: 9401148163
Category : Technology & Engineering
Languages : en
Pages : 222
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Book Description
In an lUlffianaged woodland, forest development follows a succession of periods of undisturbed natural growth, interrupted by intermediate loss or damage of trees caused by fire or wind or other natural hazards. In a managed woodland, the most important periodic disturbances are the thinning operations, which are often carried out at regular intervals and which usually have a significant effect on the future evolution of the resource. Thus, a realistic model of forest development includes both natural growth and thinnings. The key to successful timber management is a proper understanding of growth processes, and one of the objectives of modelling forest development is to provide the tools that enable foresters to compare alternative silvicultural treatments. Foresters need to be able to anticipate the consequences of a particular thinning operation. In most cases, total timber volume is not a very appropriate measure for quantifying growth or yields, or changes caused by thinning operations. Yield in economic terms is defined by the dimensions and quality attributes of the harvestable logs, and estimating timber products is a central issue of production-oriented growth and yield research. Introduction 2 Growth modelling is also an essential prerequisite for evaluating the consequences of a particular management action on the future development of an important natural resource, such as a woodland ecosystem.
Author: Harold E. Burkhart
Publisher: Springer Science & Business Media
ISBN: 9048131707
Category : Technology & Engineering
Languages : en
Pages : 463
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Book Description
Drawing upon a wealth of past research and results, this book provides a comprehensive summary of state-of-the-art methods for empirical modeling of forest trees and stands. It opens by describing methods for quantifying individual trees, progresses to a thorough coverage of whole-stand, size-class and individual-tree approaches for modeling forest stand dynamics, growth and yield, moves on to methods for incorporating response to silvicultural treatments and wood quality characteristics in forest growth and yield models, and concludes with a discussion on evaluating and implementing growth and yield models. Ideal for use in graduate-level forestry courses, this book also provides ready access to a plethora of reference material for researchers working in growth and yield modeling.
Author: A. Amaro
Publisher: CABI
ISBN: 9780851998732
Category : Science
Languages : en
Pages : 426
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Book Description
There are many theoretical approaches to modelling forest systems, but not all of them have valid practical applications. This book reviews current thinking on various models and presents applications in various contexts. Papers have been selected and developed from those presented at aworkshop held in Portugal in June 2002. Topics covered include: Forest reality and modelling strategies Mathematical approaches and reasoning Estimation processes Models, validation and decision under uncertainty Model archives and metadata
Author: Richard Reed
Publisher: Routledge
ISBN: 1317348222
Category : Social Science
Languages : en
Pages : 184
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Book Description
The Guarani of Paraguay have survived over four centuries of contact with the commercial system, while keeping in tact their traditions of leadership, religion and kinship. This concise ethnography examines how the Guarani have adapted over time, in concert with Paraguay’s subtropical forest system. New To This Edition: Expanded historical background and updated demographic information on the Guarani brings the research to the present day (Chapter 1). Expands and strengthens the discussion of “sustainability” to include more recent advances in the concept (Chapter 1), and introduces the idea of “subsidy from nature” into the discussion of conventional tropical development (Chapter 3). Develops the discussion of women’s labor in horticulture (Chapter 3). Analyzes the effects of indigenous mixed agro-forestry in stemming the high rates of Paraguayan deforestation of the 1990s (Chapter 4). Discusses the recent globalization of the yerba mate market, and the economy's effecton Paraguay’s protected areas (Chapter 4). Describes Guarani ethnic federations as a means to engage the national and international political institutions (Chapter 4). Explores the rapid growth in Guarani population in native communities, which results from lower infant mortality, more land pressure and more reliable census data (Chapter 4). This brief introductory text makes the ideal supplementary text for students of anthropology.
Author: Pravat Kumar Shit
Publisher: Springer Nature
ISBN: 3030565424
Category : Science
Languages : en
Pages : 675
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Book Description
This book demonstrates the measurement, monitoring, mapping, and modeling of forest resources. It explores state-of-the-art techniques based on open-source software & R statistical programming and modeling specifically, with a focus on the recent trends in data mining/machine learning techniques and robust modeling in forest resources. Discusses major topics such as forest health assessment, estimating forest biomass & carbon stock, land use forest cover (LUFC), dynamic vegetation modeling (DVM) approaches, forest-based rural livelihood, habitat suitability analysis, biodiversity and ecology, and biodiversity, the book presents novel advances and applications of RS-GIS and R in a precise and clear manner. By offering insights into various concepts and their importance for real-world applications, it equips researchers, professionals, and policy-makers with the knowledge and skills to tackle a wide range of issues related to geographic data, including those with scientific, societal, and environmental implications.
Author: Aaron R. Weiskittel
Publisher: John Wiley & Sons
ISBN: 1119971500
Category : Science
Languages : en
Pages : 431
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Book Description
Forest Growth and Yield Modeling synthesizes current scientific literature and provides insights in how models are constructed. Giving suggestions for future developments, and outlining keys for successful implementation of models the book provides a thorough and up-to-date, single source reference for students, researchers and practitioners requiring a current digest of research and methods in the field. The book describes current modelling approaches for predicting forest growth and yield and explores the components that comprise the various modelling approaches. It provides the reader with the tools for evaluating and calibrating growth and yield models and outlines the steps necessary for developing a forest growth and yield model. Single source reference providing an evaluation and synthesis of current scientific literature Detailed descriptions of example models Covers statistical techniques used in forest model construction Accessible, reader-friendly style
Author: David Kaimowitz
Publisher: CIFOR
ISBN: 979876417X
Category : Deforestation
Languages : en
Pages : 153
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Book Description
Types of economic deforestation models. Household and firm-level models. Regional-level models. National and macro-level models. Priority areas for future research.
Author: Hans Pretzsch
Publisher: Springer Science & Business Media
ISBN: 354088307X
Category : Technology & Engineering
Languages : en
Pages : 670
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Book Description
The aim of this book is to improve the understanding of forest dynamics and the sustainable management of forest ecosystems. How do tree crowns, trees or entire forest stands respond to thinning in the long term? What effect do tree species mixtures and multi-layering have on the productivity and stability of trees, stands or forest enterprises? How do tree and stand growth respond to stress factors such as climate change or air pollution? Furthermore, in the event that one has acquired knowledge about the effects of thinning, mixture and stress, how can one make that knowledge applicable to decision-making in forestry practice? The experimental designs, analytical methods, general relationships and models for answering questions of this kind are the focus of this book. Given the structures dealt with, which range from plant organs to the tree, stand and enterprise levels, and the processes analysed in a time frame of days or months to decades or even centuries, this book is directed at all readers interested in trees, forest stands and forest ecosystems. This work has been compiled for students, scientists, lecturers, forest planners, forest managers, and consultants.
Author: Hamish Kimmins
Publisher: Earthscan
ISBN: 1849776431
Category : Nature
Languages : en
Pages : 305
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Book Description
Modelling is an important tool for understanding the complexity of forest ecosystems and the variety of interactions of ecosystem components, processes and values. This book describes the hybrid approach to modelling forest ecosystems and their possible response to natural and management-induced disturbance. The book describes the FORECAST family of ecosystem management models at three different spatial scales (tree, stand and landscape), and compares them with alternative models at these three spatial scales. The book will help forest managers to understand what to expect from ecosystem-based forest models; serve as a tool for use in teaching about sustainability, scenario analysis and value trade-offs in natural resources management; and assist policy makers, managers and researches working in assessment of sustainable forest management and ecosystem management. Several real-life examples of using the FORECAST family of models in forest management and other applications are presented from countries including Canada, China, Spain and the USA, to illustrate the concepts described in the text. The book also demonstrates how these models can be extended for scenario and value trade-off analysis through visualization and educational or management games.
Author: John Wainwright
Publisher: John Wiley & Sons
ISBN: 9780471496182
Category : Performing Arts
Languages : en
Pages : 434
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Book Description
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