2005 年 68 巻 5 号 p. 819-824
In order to make the space design of a comfortable bathing in the forest atmosphere (BIFA), it is important to investigate the effect to a human body first and then the characters of many physical factors constituting the forest space. In this paper we research and analyze physical factors constituting the elements of BIFA, especially light intensity and thermal effect. To make clear the effect of BIFA, this experiment was done in the forest [Seiwa Residents' Woodland] and the city [Chiba City] respectively at the same time. The subjects of this experiment are twelve, and the results were recorded by rating to some evaluation scales, and data are compared from the viewpoint of comfortableness. From this result, we can clearly notice psychological and physiological effects at the case of forest. In the mountainside of a village in summer under the fine sky, the values of the light intensity were subjectively seemed to be the same as in the city though the real intensity was 1/22 of the city. Moreover, at the case of thermal effect, we surely understand that it is cooler and more comfortable in the forest than in the city from the resulting data through the whole day.