京都市における街路樹の根上がりと植樹桝,舗装,日照条件との関係について

抄録

Street trees have some problems. One of these problems is street tree root growths that rift up and break many pavements and curbs. The purpose of this research is to know the relationship between surrounding conditions and the incidence of the pavement/curb failure by street tree roots in urban area of Kyoto city. We focused on some kinds of planting plots and pavements, the solar radiation as the factors of surrounding conditions and chose three species of street trees: maidenhair tree, trident maple and tulip tree. Sites of this research were some main streets running north-south in Kyoto city. In this case, a type of street trees that Maidenhair tree and trident maple planted in short planting plots on asphalt pavement have the high rate of incidence of the pavement/curbs failure by tree roots in Kyoto city. In addition, relatively wide roads have a low incidence of the pavement/curb failure, whereas the incidence on narrow roads is relatively high. Meanwhile, the solar radiation as the factors of surrounding conditions barely has influence on the rate of common short planting plots and common long planting plots.