Abstract
The geological feature of the man-made slopes in Kobe Municipal Sports Park is under the Kobe clay layer which is composed of weathered rocks and the pH degree shows high in alkalinity. Evergreen and deciduous seedlings were planted into the improved Masa soil layer more than 30cm thick upon the slope surface in 1980. Monitorings of the vegetative and soil condition were carried out in 12 and 20 years after a revegetative construction on the man-made slopes. As the results, the reforestation of a mixed forest with evergreen and deciduous trees was ascertained. Its basal area was checked as 11m2/ha in 1992 to 16m2/ha in 2000. In addition, it is confirmed that the soil solidity got lower and also the root distribution extended wider in 2000.
