密度を尺度とした市街地の変容過程に関する研究 : (その 1) 人口集中地区の変動過程の分析 [in Japanese] A STUDY ABOUT TRANSFORMATION PROCESSES OF DENSELY INHABITED DISTRICTS : Part I; The change of urban size and density [in Japanese]
Access this Article
Search this Article
In this study the transformation processes of urban sizes and densities from 1960 to 1975 are analized. For the purpose of this, we used census data about Densely Inhabited District (DID) "which is defided as an area within a shi, ku, machi or mura that is composed of a group of contiguous enumeration districts each of which has a population density of about 4000 inhabitants or more per square kilometer, and whose total population exceeds 5000 as of 1 October 1960, 1965, 1970, 1975." And DID's were originally established in each shi, ku, machi, mura. However, the contiguous DID's spreading over the boundary of shi, ku, machi, mura are counted as one contiguous DID in this study. So, Tokyo contiguous DID which is equal to Tokyo Metropolitan Area has 19.3 millions inhabitants and 1909 square kilometers. And we defined Urban Size Index which is product of DID's population and area. The findings are as following. i) There are remarkable differences among three periods from 1960 to 1975. In the first period (1960-1965), rapid urban growth had occured only in the three metropolitan areas, Tokyo, Osaka, Nagoya. So we could name this period "the preparation period for next rapid expansion". And many DID's had rapid growth tendencies on size and declining tendencies on density all over the country in the second period. So we named this period "the rapid expanding period". The third period (1970-1975) is "the settling period", when the number of of the DID's that grew with resing tendencies on density had been increasing. We could characterize the three periods as This. ii) We found regional characteristics of urban growth in relation with these three periods. In general, urban growth power had been only in the three metropolitan areas in the first period, and it had expanded to the Middle Japan (Kanto, Chubu, Kinki Region) in the second periods. And we can point out that the power extended to the South Japan (Chugoku, Sikoku, Kyushyu Region) which includs the Coastal Area of the Inland Sea of Seto which forms a part of "Tokaido Belt Chitai (the Megalopolis of the Coastal Zone of the Pacific Ocean)" in the third period (1970-1975). But the urban growth power had never extended to the whole area in the North Japan (Hokkaido, Tohoku and Hokuriku Region) in even the third period. iii) The changing process of DID's size and density is affected by its size. Some of DID's whose Urban Size Index is 100000 (person・km^2) or less are growing rapidly and some of them have declining tendencies on their sizes. But the DID's whose Urban Size Index is 1000000 (person・km^2) or more have necessarily gradual growing tendencies.
- Transactions of the Architectural Institute of Japan
Transactions of the Architectural Institute of Japan 302(0), 95-106, 1981
Architectural Institute of Japan