Annals of Botany 95/3 © Annals of Botany Company 2005; all rights reserved
On the Factor Light in Plant Communities and its Importance for Matter Production
Institute of Botany, Faculty of Science, University of Tokyo
* E-mail Marcus@rsbs.anu.edu.au
Originally published as:
Über den Lichtfaktor in den Pflanzengesellschaften und seine Bedeutung für die Stoffproduktion
Japanese Journal of Botany 14: 22–52, by the Science Council of Japan, Tokyo, Japan, March 1953 (received 11 October 1952)
A new translation into English from German for the Annals of Botany with the permission of Professor Saeki, by MARCUS SCHORTEMEYER*
Ecosystem Dynamics Group, Research School of Biological Sciences, Australian National University, GPO Box 475, Canberra ACT 2601, Australia
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I. INTRODUCTION |
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There are two ways to investigate plant communities: the first is to study the distribution of individuals of a species in a given plant community. In this way, as Lundegårdh (1925
, p. 5) criticised, we can only achieve the floristic description of a plant community according to Du Rietz (1921) and others, or the ‘formal sociology’ of Kylin (1926), without an ecological and material content. The other way is physiologically–ecologically based on the metabolism of the individuals or species that make up the community. The correct sociological relationships between individuals or species can only be explained materialistically in this way. Naturally, our scientific studies must take this ecological–sociological way.
The growth of an individual plant in a plant community, after its germination, is under the influence of macro- and micro-environmental factors, and it has to maintain its energy or carbohydrate economy under defined water, temperature and nutrient conditions.
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II. THE STRATIFIED-CLIPPING METHOD AND THE PRODUCTIVE STRUCTURE OF PLANT COMMUNITIES |
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III. THE FACTOR LIGHT IN PLANT COMMUNITIES |
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A. Observed light intensity in plant communities, especially in herbosa
B. Dependence of light extinction on leaf area index
C. Theoretical considerations on the extinction coefficients of plant communities
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IV. PRODUCTIVITY AND SEASONAL DEVELOPMENT OF PLANT COMMUNITIES |
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V. MATHEMATICAL BASIS FOR THE CALCULATION OF MATTER PRODUCTION IN PLANT COMMUNITIES |
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SUMMARY |
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APPENDIX: NOTES ON THE TRANSLATION |
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