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Author : M. Irfan Ashraf
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (869 download)
Download or read book A Framework for Predicting Forest Growth and Yield Under Projected Climate Change written by M. Irfan Ashraf and published by . This book was released on 2013 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rony Mazumder
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Assessing Climate Change Impact on Tree Growth and Yield in Newfoundland with Process Based and Statistic Models written by Rony Mazumder and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest Growth and Yield (G&Y) modelling is essential for timber supply analysis and sustainable forest management. Empirical G& Y models are typically developed based on historical data obtained from permanent sample plots (PSP) with an assumption that forest will grow back at the same rate as in the past. With the predicted trend of global warming, growth and yield projections with traditional G& Y models would become invalid because the projected climate change will likely affect forest growth in the future. Therefore, new and innovative approaches are required to account for the potential impacts of climate change on tree growth and yield predictions. In this study, process based and statistical models were used to assess climate change on forest growth and yield in the province of Newfoundland and Labrador, Canada. A process based model (JABOWAIII) was used to assess the impact of climate change on forest G& Y. The model was calibrated with seventy PSPs that cover the entire spectrum of soil and weather conditions. The model results were used to estimate species specific climate change modifiers, which can be used to adjust the existing yield curves to account for the effects of climate change. A multiple regression and an Artificial Neural Network (ANN) models that take into account biophysical conditions and historical climate factors were developed to predict the G& Y of individual trees of forest stands. Thirteen independent variables were included in the statistical based G&Y model. Stand and tree-level independent variables included species distribution, stand age, tree height, tree diameter, stand basal area. Biophysical and climate variables including growing degree days, potential solar radiation, and annual precipitation were also included in the new model as input variables. First- and second-level auto-correlations of growth in individual trees were also considered in the models. Results from the ANN-model were compared with those produced with linear-regression models. Both JABOWAHIII model and statistical model predicted that forest G& Y will be negatively affected by warmer temperature. Uncertainties related to both process-based models and statistical models are also discussed in the thesis.
Author : R. Tognetti
Publisher :
ISBN 13 : 9788303080769
Total Pages : 0 pages
Book Rating : 4.0/5 (87 download)
Download or read book Climate-smart Forestry in Mountain Regions written by R. Tognetti and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book offers a cross-sectoral reference for both managers and scientists interested in climate-smart forestry, focusing on mountain regions. It provides a comprehensive analysis on forest issues, facilitating the implementation of climate objectives. This book includes structured summaries of each chapter. Funded by the EU's Horizon 2020 programme, CLIMO has brought together scientists and experts in continental and regional focus assessments through a cross-sectoral approach, facilitating the implementation of climate objectives. CLIMO has provided scientific analysis on issues including criteria and indicators, growth dynamics, management prescriptions, long-term perspectives, monitoring technologies, economic impacts, and governance tools.
Author :
Publisher :
ISBN 13 :
Total Pages : 590 pages
Book Rating : 4.3/5 (21 download)
Download or read book Forest Growth Modelling and Prediction written by and published by . This book was released on 1988 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aaron R. Weiskittel
Publisher : John Wiley & Sons
ISBN 13 : 0470665009
Total Pages : 431 pages
Book Rating : 4.4/5 (76 download)
Download or read book Forest Growth and Yield Modeling written by Aaron R. Weiskittel and published by John Wiley & Sons. This book was released on 2011-08-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Arthur Vrechi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (125 download)
Download or read book A Forest Productivity Analysis Framework To Estimate Yields, Gaps And Manage Production Risks written by Arthur Vrechi and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehending and forecasting planted forests yields are actually a challenge for forest managers, mainly due to combined, and generally misunderstood, influences of space-time weather oscillations, pests, abiotic disturbances and lack of management practices.Aiming to provide future stochastic production estimations for risk assessment and KPIu2019s for current productivity, considering distinctly climate and forest management effects, we developed a framework named GPT (Portuguese acronym for total productivity management), that integrates a soil and climate database (from 1980 up-to-date), a process-based ecophysiological model (an improved version of 3-PG), yield gaps concept, Monte Carlo approach, probabilistic analysis, forest inventory and remote sensing.This framework was applied to a group of Eucalyptus plantation, ranging from 2 to 4 years old, in northeast Sao Paulo, Brazil, that suffered from defoliation and sporadic mortality due to an intense dry period in 2017. Landsat-8 imagery timeseries were used to estimate different levels of defoliation and eventual mortality.Reference productivity (a timeless reference given by the framework) for this plantation was 270 mu00b3/ha (year 6). Optimist and pessimist scenarios (from probabilistic analysis) ranged from 301 to 223 mu00b3/ha. Actual weather conditions impacted negatively the attainable productivity by 5,4%. Defoliation and mortality impacts over future yield varied from -2% up to -20%, considering optimistic and pessimistic future scenarios, with a most likely estimation of -9,1%. This approach was proven to be helpful for forest managers to predict and prevent yield losses, manage risks and take decisions considering the dynamics of forest growth under changing scenarios.
Author : Patrick A. Ray
Publisher : World Bank Publications
ISBN 13 : 1464804788
Total Pages : 149 pages
Book Rating : 4.4/5 (648 download)
Download or read book Confronting Climate Uncertainty in Water Resources Planning and Project Design written by Patrick A. Ray and published by World Bank Publications. This book was released on 2015-08-20 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Confronting Climate Uncertainty in Water Resources Planning and Project Design describes an approach to facing two fundamental and unavoidable issues brought about by climate change uncertainty in water resources planning and project design. The first is a risk assessment problem. The second relates to risk management. This book provides background on the risks relevant in water systems planning, the different approaches to scenario definition in water system planning, and an introduction to the decision-scaling methodology upon which the decision tree is based. The decision tree is described as a scientifically defensible, repeatable, direct and clear method for demonstrating the robustness of a project to climate change. While applicable to all water resources projects, it allocates effort to projects in a way that is consistent with their potential sensitivity to climate risk. The process was designed to be hierarchical, with different stages or phases of analysis triggered based on the findings of the previous phase. An application example is provided followed by a descriptions of some of the tools available for decision making under uncertainty and methods available for climate risk management. The tool was designed for the World Bank but can be applicable in other scenarios where similar challenges arise.
Author : J. J. Landsberg
Publisher : Academic Press
ISBN 13 : 0080922546
Total Pages : 352 pages
Book Rating : 4.0/5 (89 download)
Download or read book Physiological Ecology of Forest Production written by J. J. Landsberg and published by Academic Press. This book was released on 2010-11-26 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Process-based models open the way to useful predictions of the future growth rate of forests and provide a means of assessing the probable effects of variations in climate and management on forest productivity. As such they have the potential to overcome the limitations of conventional forest growth and yield models, which are based on mensuration data and assume that climate and atmospheric CO2 concentrations will be the same in the future as they are now. This book discusses the basic physiological processes that determine the growth of plants, the way they are affected by environmental factors and how we can improve processes that are well-understood such as growth from leaf to stand level and productivity. A theme that runs through the book is integration to show a clear relationship between photosynthesis, respiration, plant nutrient requirements, transpiration, water relations and other factors affecting plant growth that are often looked at separately. This integrated approach will provide the most comprehensive source for process-based modelling, which is valuable to ecologists, plant physiologists, forest planners and environmental scientists. Includes explanations of inherently mathematical models, aided by the use of graphs and diagrams illustrating causal interactions and by examples implemented as Excel spreadsheets Uses a process-based model as a framework for explaining the mechanisms underlying plant growth Integrated approach provides a clear and relatively simple treatment
Author : Linda A. Joyce
Publisher : DIANE Publishing
ISBN 13 : 9780788127649
Total Pages : 76 pages
Book Rating : 4.1/5 (276 download)
Download or read book Productivity of America's Forests and Climate Change written by Linda A. Joyce and published by DIANE Publishing. This book was released on 1996-03 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyzes the impacts of elevated carbon dioxide & climate change on forested ecosystems, & the economic feedbacks on harvest patterns & vegetation change on private timberlands in the U.S. Used as a framework linking general circulation model output, an ecosystem model (TEM), models of the forest sector, & a carbon accounting model. Future climates are described with output from the different models. The strong demand for wood products in the future dampens any positive growth effects on forests, for all but the maximum scenario. Charts, tables & maps.
Author : Malcolm S. Itter
Publisher :
ISBN 13 : 9780355780239
Total Pages : 183 pages
Book Rating : 4.7/5 (82 download)
Download or read book The Development and Application of Spatio-Temporal Methods to Understand and Predict Broad-Scale Patterns of Forest Change written by Malcolm S. Itter and published by . This book was released on 2018 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans Pretzsch
Publisher : Springer Science & Business Media
ISBN 13 : 354088307X
Total Pages : 670 pages
Book Rating : 4.5/5 (48 download)
Download or read book Forest Dynamics, Growth and Yield written by Hans Pretzsch and published by Springer Science & Business Media. This book was released on 2009-06-19 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Patrick J. Martin
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (319 download)
Download or read book Growth and Yield Prediction Systems written by Patrick J. Martin and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report briefly describes the growth & yield prediction systems currently produced by the British Columbia Ministry of Forests. Only those systems that generate estimates of stand volume are considered; site index curves, individual tree volume equations, & other important growth & yield tools are not described. Relevant background information is included, including the history of growth & yield prediction, classification of prediction systems, and system characteristics. Simple mathematical expressions are provided to describe the systems used for unmanaged stands (site class system, variable density yield projections, site index system) and managed stands (the Tree & Stand Simulator). The final sections contain examples illustrating the use of the systems within the Ministry and a review of future development of such systems. Includes glossary.
Author : Henry Nixon Chappell
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (319 download)
Download or read book Predicting Forest Growth and Yield written by Henry Nixon Chappell and published by . This book was released on 1987 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Teja Singh
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (319 download)
Download or read book Forest Yield Predictions written by Teja Singh and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study modelled the risk of fire at the stand and forest level to aid management decisions on the effect of such occurrences on annual allowable cut and future timber supplies; determined the frequency of large-scale insect and disease occurrences, and derived a model to assess their impact on the present and future forest yields; and tested, reviewed, and modified the fire, insect and disease, and other risk factor models for application over boreal forest ecoregions in western Canada. The program involved probabilistic (a preliminary version of the FOrestry RIsk Model (FORIM) based on Hinton leasehold and East Slopes fire risk data), deterministic (FORMAN model selected, modified, and tested for impacts in the Footner Lake and the Peace River volume sampling regions in northern Alberta), and dynamic (Markov decision support model applied to optimal forest management strategies for the Peace River and Footner Lake forests in northwestern Alberta) modelling approaches to give a comparative assessment of their merits.
Author : J. K. Vanclay
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (78 download)
Download or read book Modelling Forest Growth and Yield written by J. K. Vanclay and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whole stand models. Size class models. Single-tree and tree list models. Data Requirements. Constructing growth models. Forest site evaluation. Diameter increment. Mortality and merchantability. Regeneration and recruitment. Model evaluation and re-calibration. Implementation and use. Future directions.
Author : David L. Peterson
Publisher : Springer
ISBN 13 : 9789400775145
Total Pages : 261 pages
Book Rating : 4.7/5 (751 download)
Download or read book Climate Change and United States Forests written by David L. Peterson and published by Springer. This book was released on 2014-01-10 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a scientific assessment of the effects of climatic variability and change on forest resources in the United States. Derived from a report that provides technical input to the 2013 U.S. Global Change Research Program National Climate Assessment, the book serves as a framework for managing U.S. forest resources in the context of climate change. The authors focus on topics having the greatest potential to alter the structure and function of forest ecosystems, and therefore ecosystem services, by the end of the 21st century. Part I provides an environmental context for assessing the effects of climate change on forest resources, summarizing changes in environmental stressors, followed by state-of-science projections for future climatic conditions relevant to forest ecosystems. Part II offers a wide-ranging assessment of vulnerability of forest ecosystems and ecosystem services to climate change. The authors anticipate that altered disturbance regimes and stressors will have the biggest effects on forest ecosystems, causing long-term changes in forest conditions. Part III outlines responses to climate change, summarizing current status and trends in forest carbon, effects of carbon management, and carbon mitigation strategies. Adaptation strategies and a proposed framework for risk assessment, including case studies, provide a structured approach for projecting and responding to future changes in resource conditions and ecosystem services. Part IV describes how sustainable forest management, which guides activities on most public and private lands in the United States, can provide an overarching structure for mitigating and adapting to climate change.
Author :
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (319 download)
Download or read book State of Europe's Forests, 2011 written by and published by . This book was released on 2011 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
