緑地の暑熱緩和効果に関する研究

概要

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Three kinds of field observation in different scales are conducted in summer to examine the relation between vegetation and air temperature. The largest scale observation is the remote sensing by airplane and the ground truth in Kumamoto city to investigate the relation between air temperature and artificial material and vegetation covering the ground. Several parks and shrines in various sizes in Fukuoka city are selected as the next observation fields. There are 32 measurement points in the fields. The green covering ratios within radiuses of 10m, 20m and 50m of which centers are the measurement points are correlated with the air temperature. The smallest scale observation is carried out in a park located in a downtown of Fukuoka city. There are 30 measurement points in an area of 1.25ha. The shape factor of green elements such as leaves in a semi-celestial sphere is defined as the green factor. The green factors at all the measurement points are correlated with the air temperature. Though the amount of vegetation is expressed in a unique way in each observation, it is clearly found that the more the green is, the air temperature is the lower.
1990-09-01