[in Japanese]

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A study on the evapotranspiration from a young tree planted in a container or a pot was conducted as part of the studies on water management on a greening project. Obtained results suggest that, Makkink's solar radiation method is applicable in estimating the evapotranspiration from the young tree as follows:
1) The daily mean leaf temperature near the top of tree was almost equal to the daily mean air temperature. This means that the daily mean temperature can be used, instead of the leaf temperature which is related to evapotranspiration.
2) The amount of evapotranspiration fromunnetted cloth container which is planted with liriodendron was greater than that of plastic container as a result of evaporation from the side of the container.
3) Makkink's solar radiation method illustrated fairly well, theevapotranspiration from the liriodendron containers used in this experiment.
4) In the same way, the evapotranspiration from the camphor tree pot was also illustrated by the Makkink's solar radiation method. However, the two empirical constants in the Makkink's formula differed greatly, between the liriodendoron container and the camphor tree pot.

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