抄録
The planting environment and the growing condition of street trees were surveyed to contribute to appropriate street tree establishment and management. The distribution and site condition in terms of road types and width and land use for dogwood street trees in the 23 wards of Tokyo prefecture were analyzed using GIS. Attributes of roads, sidewalks, planting layouts and background, and tree vigor were surveyed at the 49 selected sites. Dogwood street trees were mainly planted in residential, commercial and business areas. It was found however that they had different backgrounds and that in different growing conditions depended on the site condition. Especially, the number of sites where dogwood trees are planted drastically increased recently on national road and Tokyo metropolitan government roads mainly on the occasion of construction works on the roads. On ward roads, they were planted as improvement of sidewalks especially in commercial and mixed land use areas. Tree vigor showed differences for different site conditions. It was considered that the selection and management of street trees should be based on site condition.
