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This volume is a synthesis of current knowledge about the growth, development and functioning of plant canopies. The term canopy is taken to include not only the upper surface of woodland, as in the original definition, but also analogous surfaces of other plant communities. Although much research has been carried out on single leaves, canopies are much more than just a collection of individual leaves, and so exhibit properties of their own. It can be argued that it is primarily at the canopy rather than the leaf level that solutions to many practical problems about the growth of plants in the field can be found. In this volume, canopy properties are considered in terms of the processes, such as transpiration and photosynthesis, by which the canopy and its environment interact. Topics discussed include the meaning of canopy structure, interception of solar radiation, exchange processes, nitrogen nutrition, leaf demography and heliotropism. Key principles are illustrated by examples from a wide range of plant community types and geographical locations. This book will be of interest to advanced students and research workers in agriculture, botany, crop sciences, ecology and forestry.

Plant canopies

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Plant canopies --- Forest canopies --- Forest canopy ecology --- Mathematical models.

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Phytomorphology. Phytoanatomy --- Plant physiology. Plant biophysics --- Plant embryology and development --- Plant canopies --- Congresses --- Feuille --- leaves --- Couvert --- Canopy --- Physiologie végétale --- Plant physiology --- Autoécologie --- autecology --- Azote --- Nitrogen --- Modèle --- Models --- Croissance --- Growth --- Méristème --- Meristems --- Plant canopies - Congresses --- Seminar --- 1986 --- Nottingham --- Transfert turbulent

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A plant canopy, a collection of leaves, is an ecosystem-level unit of photosynthesis that assimilates carbon dioxide and exchanges other gases and energy with the atmosphere in a manner highly sensitive to ambient conditions including atmospheric carbon dioxide and water vapor concentrations, light and temperature, and soil resource availability. In addition to providing carbon skeletons and chemical energy for most of the living organisms, these key  canopy functions affect global climate through modification of atmospheric carbon dioxide concentration and through altering surface albedo. This interaction, the climate-carbon cycle feedback, is one of the most uncertain processes for projection of future global climate. This book describes our current knowledge of canopy photosynthesis that has accumulated over the last hundred years since the pioneering study of P. Boysen Jensen. The book provides a comprehensive analysis of plant canopy physiology, ecology and physics with emphasis on predictive modeling techniques. The book is divided into five parts covering hierarchy of canopy processes in time and space. Two chapters in Part 1 discuss the basic physical processes on light attenuation and energy transfer in plant canopies, while three chapters in Part 2 deal with the principle mechanisms of leaf gas-exchange regulation and the patterns and mechanisms of variations in leaf traits. Three chapters in Part 3 focus on whole-plant processes in plant canopies. Part 4 (in four chapters) describes how vegetation functions are assessed by modeling, eddy-covariance techniques, and remote sensing and forest inventory. Finally, three chapters in Part 5 discuss the relationships between canopy photosynthesis and other vegetation processes in plant stands.

Plant Physiology --- Botany --- Earth & Environmental Sciences --- Photosynthesis. --- Plant canopies. --- Canopies, Plant --- Canopy, Plant --- Plant canopy --- Plant communities --- Photobiology --- Plants --- Gases from plants --- Effect of light on --- Photorespiration --- Plant physiology. --- Plant Physiology. --- Physiology

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Forêt tropicale humide --- Tropical rain forests --- Faune --- Fauna --- Flore --- Flora --- Écologie forestière --- forest ecology --- Tropiques humides --- Humid tropics --- Couverture végétale --- Plant cover --- Forest canopy ecology. --- Rain forest ecology. --- ECO Ecology --- ecology --- plant canopies --- popularization --- rain forests --- tropical rain forests --- RBINS-OTHER --- Forest canopy ecology --- Rain forest ecology --- Equatorial forest ecology --- Rain forests --- Tropical rain forest ecology --- Forest ecology --- Forest canopies --- Ecology