Abstract
As the first step of a series of studies which aim at quantifying and clarifying the characteristics of heat and water balances of a single tree, this paper focuses on the method to quantify transpiration of a Zelkova serrata using weighing machine and its accuracy. First, the measuring method for transpiration using the weighing machine was established, and the measurement system was made. The time variation of the weight measurement result was examined in summer. Next, a method to eliminate the effect of wind on the weight measurement result was proposed, and the estimation accuracy for the transpiration was confirmed when using the measurement and elimination method.
