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Photosynthesis and transpiration of an isolated tree: model and validation
Author(s) -
THORPE M. R.,
SAUGIER B.,
AUGER S.,
BERGER A.,
METHY M.
Publication year - 1978
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1978.tb02039.x
Subject(s) - transpiration , photosynthesis , environmental science , atmospheric sciences , tree (set theory) , photosynthetically active radiation , carbon dioxide , botany , biology , mathematics , physics , ecology , mathematical analysis
Abstract. A model for the distribution of radiation incident on leaves in an isolated apple tree is presented. The simulated area of shadow cast by a tree compared well with measured values. The radiation model is combined with leaf models of photosynthesis and stomatal behaviour to simulate diurnal variations in the exchanges of carbon dioxide and water by the tree. Satisfactory correspondence was obtained when observed rates of transpiration and photosynthesis were compared with simulations. Further simulations indicated the diurnal patterns of transpiration and photosynthesis to be expected for trees with various shapes and leaf areas.