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A Canopy Model for Plant Growth Within a Growth Chamber: Mass and Radiation Balance for the Above Ground Portion
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Abstract
As humans move into outer space, need for air, clean water and food require that green plants be grown within all planetary colonies. The complexities of ecosystems require a sophisticated understanding of the interactions between the atmosphere, all nutrients, and life forms. While many experiments must be done to find the relationships between mass flows and chemical/energy transformations, it seems necessary to develop generalized models to understand the limitations of plant growth. Therefore, it is critical to have a robust modelling capability to provide insight into potential problems as well as to direct efficient experimentation. Last year we reported on a simple leaf model which focused upon the mass transfer of gases, radiation/heat balances, and the production of photosynthetically produced carbohydrate. That model indicated some of the plant processes which had to be understood in order to obtain parameters specific for each species. However, that model did not account for available carbohydrate balance between storage, growth, and export to new tissues. The objective of this paper is to develop a generalized model which includes
layers of leaves interacting with each other. This model differs from general canopy models of field growth since in growth chambers these leaf layers differentially absorb radiation, from a spatial fixed light source above the canopy, and gases, arriving from below the canopy and being forced to pass through it. The overall approach to the calculations remains largely the same as the leaf model. Energy balances are first used to calculate gases exchange patterns. Carbohydrate production is then calculated from the light intensity and CO2/O2 concentrations. The productivity is then divided into respiration loss, storage for maintenance, structural growth, and export to other growing portions of the plant.
Authors
Citation
Heath, R., "A Canopy Model for Plant Growth Within a Growth Chamber: Mass and Radiation Balance for the Above Ground Portion," SAE Technical Paper 911494, 1991, https://doi.org/10.4271/911494.Also In
References
- Moore, R. 1989 Root graviresponsiveness and cellular differentiation in wild-type and a starchless mutant of Arabidopsis thaliana Ann Bot 64 271 277
- Evans, M.L. 1991 Gravitropism: Interaction of sensitivity modulation and effector redistribution Plant Physiol 95 1 5
- Goudriaan, J. 1989 Simulation of Micrometeorology of crops, some methods and their problems and a few results Agric. Forest Meteor 47 239 258
- Heath, R.L. Hurd R.M.S. Madore M.A. 1990 A generalized photosynthetic model for plant growth within a closed artificial environment SAE 20th lntersociety Conference on Environmental Systems paper 901331
- Monteith, J.L. Unsworth M.H. 1990 Principles of Environmental Physics Second Arnold Edward Hodder & Stoughton London
- Thornley, J.H.M. 1976 Mathematical Models in Plant Physiology Academic Press London
- Erickson, R.O. 1976 Modeling of Plant Growth Annu. Rev. Plant Physiol 27 407 443
- Coombs, J Hall D.O. Long S.P. Scurlock I.M.O. 1985 Plant Growth Analysis Pergamon Press 22 25
- Norman, J. 1980 Interfacing Leaf and Canopy Light Intercepts in Models in Predicting Photosynthesis for Ecosystem Models Hesketh J.D. Jones J.W. CRC Press 1 50 67
- Reynolds, J.F. Thornley J.H.M. 1982 A Shoot: Root Partitioning Model Ann. Bot 49 585 597
- Thom, A.S. 1975 Momentum, mass, and heat exchange of plant communities in Vegetation and the Environment Monteith J.L. 1 Academic Press N.Y. 57 109
- Ross, J. 1975 Radiative Transfer in Plant Communities in Vegetation and the Environment Monteith J.L. 1 Academic Press N.Y. 13 55
- Keener, M.E. DeMichele D.W. Sharpe P.J.H. 1979 Sink metabolism: A conceptual framework for analysis Ann. Bot 44 659 669
- Potter, J.R. Jones J.W. 1977 Leaf area partitioning as an important factor in growth Plant Physiol 59 10 14
- Sestak, Z. Ticha I. Catsky J. Solarova J. Pospisilova J. Hodanova D. 1985 Integration of Photosynthetic Characteristics during Leaf Development in Photosynthesis during Leaf Development Sestak Z. W. Junk Publishing Dordrecht 266 286
- Causton, D.R. Venus J.C. 1981 The Biometry of Plant Growth Edward Arnold Publishing London
- Porter, J.R. 1984 Approaches to modelling canopy development in wheat in Wheat Growth and Modelling Day W. Atkins R.K. NATO ASI Series, Plenum Press N.Y. 69 81