No abstract

The purpose of this study is to make clear the relation between Land Use Zoning Regulations and Green Coverage Ratio in Japanese urbanized city. It is probable that Land Use Zoning Regulations has an influence on Green Coverage Ratio for its restrictions to building form and use. However, this relation is not clear. For creating and protecting green area in urbanized city, it is important to consider the influence brought by land use zones. The study area was selected in Sakai City, Osaka, Japan. Green Coverage Ratios of past 3 terms in the study area were estimated by satellite remote sensing data (LANDSAT5-TM data), and its changes were analyzed statistically using GIS. The results of this study show that there are some tendencies of Estimated Green Coverage Ratio's change in each land use zones. And this means the possibility to take control of Green Coverage Ratio in urbanized city and give supports to the establishment of the green area-related laws by Land Use Zoning Regulations.

The distribution and mixture of urban land use in Japanese cities was quantitatively represented by using two indexes of texture analyses, spatial autocorrelation and information entropy. The spatial autocorrelation was calculated as Moran's I, and the entropy acquired by considering not only the composition of the areas of each land use class, but also the relation of adjacent cells. Land use data in urban areas except green areas were obtained from a digital land use map, and green areas by processing remote sensing data using an Aster GDS. These data were compiled by GIS, and the two indexes of each land use were calculated in each class. It was concluded that both indexes indicate different states of land use, and their relation was different in each land use class. In some it was sufficient to consider only the entropy, but in other cases, it was not sufficient. Using these indexes together gave a more accurate portrait than one alone for grasping the distribution and mixture of urban land use.

No abstract

Urban surface albedo, which is one of the important factors of the urban heat island phenomenon, was used to evaluate urban land use regulations. Broadband albedo at the surface level of Sakai City, Japan, was calculated, and effects of land use regulations and actual land use were estimated using satellite remote sensing data, a land use regulation map and detailed digital information expressing actual land use. Land use regulations defi ne land use, maximum building coverage ratios and maximum fl oor area ratios, which relate the heights of buildings to the areas of their sites. These factors have effects upon broadband albedo and each narrowband albedo corresponding to wavelengths observed by Landsat ETM+. Albedo values differed according to land use regulation zones. The combination of land use regulation and actual land use is also meaningful in grasping urban surface albedo. But this relationship may provide only slight insight into the urban heat island phenomenon.