Foundamental Studies on Open Space Systems (I)

Abstract

This study is to recognize the complicated structurization of many elements that relate to physical environment in which land use is contained. Open space is one of the most essential elements that relate to physical enviroment and land use.
The recognition of the complicated structurization of many elements that relate to land use are very effective to organize the open spaces. Because, the situations of the land and people are supported by the complicated structurization which is composed of relations of many elements; physical, social, economical, political and so on. And the changes of complicated structurization affect to the total situations.
In this study, the complicated structurization between land use (existing open space 1, existing open space 2, existing open spen space 3, urbanized area) and slope were discussed. On the process of this study, land use was recognized as the results of human behavior in the given space.
There are so many tools to approach for this aim, but it was tried to understand the complicated structurization by mesh analysis. The process are as follows.
(1) Selection of study area; the complicated structurization between land use and slope degree is in influenced by the area conditions. In the case of high density area it is necessary to develop into the hillside. One aim in this study was to recognize the limit of various kind of development on the sloped area, for this reason Osaka Prefecture was selected for study area, because of shortage of the flat space for the development.
(2) Collection of data; on the process of this study, the various kinds of data of land use were obtained from existing land use map (1/30, 000: 1968) by setting the 500 square meters grid. And the detailed data of slope degree was gotton from the same grid. The pitch of contour line is 20 meters.
(3) The first stage of this study was to understand the dynamic balance of land use through the changes of slope degree.
(4) The second stage was to introduce the basic study to open space systems.
(5) The results of this study in Osaka Prefecture are as follows.
(1) Urbanized area was the dominant land use element, despite of the Iand use was too much confused on flat zone.
(2) Forest and ricefield were on the tendency to change to urbanized area on the sloped zone under 24%.
(3) Forest and rice field were stabilized on the sloped zone over24%
(4) Forest was the dominant land use element on high sloped zone. The transltlon zone from inferior to dominant was 24% sloped areas,
(5) Ricefield was also the donninant land use element on sloped zone, but this element was not so dominallt in higher sloped zone. The transition zone from inferior to dominant was 16% sloped areas.
In this study only the relationship between land use and slope degree was discussed. But there are more and more elements that relate to land use and open space systems. The cognition of the complicated structurization of many elements are to be based on open spacesystems planning.