Physiological Ecology of Forest Production, Volume 4

1st Edition

Principles, Processes and Models

Authors: J. Landsberg Peter Sands
Hardcover ISBN: 9780123744609
eBook ISBN: 9780080922546
Imprint: Academic Press
Published Date: 22nd October 2010
Page Count: 352
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Table of Contents

1  Introduction
1.1  Some background on forests
a)  Goods and services
b)  Wood products
c)  Water
d)  CO2 sequestration
1.2  Models and physiology
a)  Importance of physiology
b)  The nature of models
c)  Complexity and uncertainty
d)  Mathematics
e)  Statistical analyses
f)  Importance of physiological modelling
1.3  Outline
2  Weather and Energy Balance
2.1  Process rates at different levels
2.2  Weather factors that affect plant growth
2.2.1  Solar radiation
a)  Types of radiation
b)  Irradiance
c)  Insolation
d)  Determination of insolation in the absence of direct observations
2.2.2  Temperature
a)  Air temperature
b)  Leaf temperatures
c)  Stem and soil temperatures
d)  Diurnal variation of temperature
2.2.3  Humidity and vapour pressure deficit
a)  Calculating vapour pressure and humidity
b)  Vapour pressure deficit
c)  Calculating average vapour pressure deficits
2.2.4  Wind
2.3  Variation of climatic factors within a canopy
2.4  Energy Balance, Evaporation and Transpiration
2.4.1  Radiant energy
a)  Net radiation
b)  Albedo of forest canopies
2.4.2  Energy balance and flux equations
2.4.3  Resistances and conductances
a)  Boundary layer conductance
b)  Stomatal conductance
2.4.4  Heat and vapour fluxes
2.4.5  Energy balance of a surface
2.5  Canopy energy balance and transpiration
2.5.1  Wind and transfer processes
2.5.2  Partitioning Absorbed Energy
2.5.3  Canopy transpiration
a)  Canopy conductance
b)  Penman-Monteith equation for canopy transpiration
2.5.4  Eddy correlation
3  Physiological Processes
3.1  Photos


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.

Key Features

  • 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
  • Includes access to electronic and printed spreadsheet examples of the variations of the ecophsyiological model


forest managers; plant physiologists; ecologists and plant ecologists; ecophysiologists; scientists and researchers involved in plant breeding, ecology and forest planning; students of forest management; environmental microbiologists


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© Academic Press 2011
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About the Authors

J. Landsberg Author

Affiliations and Expertise

(retired) ‘Withycombe’, Church Lane, Mt Wilson, NSW 2786, Australia

Peter Sands Author

Affiliations and Expertise

(retired) 39 Oakleigh Ave, Taroona, Australia 7053