抄録
A phenomenological model (Hino 2003, 2004) on the stomatal mechanisms has been applied to calclate the daytime changes of transpiration, sensible and latent heats, CO2 absorption and phtosynthetic products.
The model is constituted of the several plant-physiological processes such as water storage changes in plant cell, water uptake from soil through root and trunk, osmatic pressure change due to photosynthesis, CO2 absorption through stomata and CO2 concentration change in plant cell.
Finally, the recently found phenomenon of'noon's nap of leaves' is explained from the present model.
