2024-03-28T09:30:05Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00000568
2022-12-19T03:41:34Z
27:28:29
9:10:11
LAND TRANSFORMATION DUE TO HOUSING DEVELOPMENT IN THE TOKYO METROPOLITAN AREA
東京大都市地域の住宅地開発に伴う地形改変
武内, 和彦
1986
吉岡, 慎一
1987
518.8
Large-scale land transformation due to housing development in the Tokyo Metropoitan Area has been significanty recognized since 1960 when the development was magnified not only on flat lands but also on hills and in low-relief mountains. Because of a lack of the study of such phenomena, this paper aims to clarify the actual state of land transformation due to post-war housing development in the 50 km sphere of Tokyo, while overviewing the periodical trends which are classified into two major stages, i. e. before and after@ 1960. As a result of this study, it becomes evident that the volume of removed earth in each development site is mainly prescribed by original landform features, especially relief energy, and the recent increase of volume is caused by developments on hills and dissected uplands. The volume of removed earth produced by housing developments of more than 20 ha in this region in 15 years since 1960 is assumed to reach 8.5 × 108 m3. This means that, in the whole region including nondevelopment areas, c. a. 13 cm (annually 9 mm) of the earth surface was disturbed, which is roughly 102 times as high as the erosion rate of the humid temperate hills covered with natural forest. On the other hand, in each development site where high earth removal is carried out such as intensive cutting and fill operations of partially more than 20 m in thickness, the earth work completely destroys the original drainage network of the lower order, which is considered to cause abrupt changes in the environment.
journal article
東京都立大学都市研究センター
1982
application/pdf
総合都市研究
15
49
58
AN00134354
03863506
https://repository.dl.itc.u-tokyo.ac.jp/record/568/files/sogot_15.pdf
jpn