Planning in the suburbs of metropolitan areas is not dealt with sufficiently by either city planning or rural planning in Japan. Studies, plans and institutions of city planning and rural planning have not been effective there. Therefore, in this study, we examine the effectiveness against sprawl of the zoning system,
senbiki-seido. The object of this investigation is the ten cities of the Tokatsu and Katsunan region in the North-west of Chiba prefecture, that were zoned in 1970. We examine effectiveness from population and land-use points of view.
The results of this investigation are:
1) Comparing the ten cities for population increase and population density, three groups emerged: ‘stable stage of urbanization (G1)’. ‘highest stage of urbanization (G2)’ and ‘early stage of urbanization (G3)’.
2) 90% of population increase is in
shigaika-kuiki, and the zoning system is thought to be effective as a method of population control.
84 Journal of Rural Planning Association Vol. 3, No . 4, 1985. 3
3) Proportion of agricultural land area in
chosei-kuiki is lower where the rate of urbanization was relatively slow when zoning took place.
4) Forestry land changes to building land faster than agricultural land. So, forestry land should be preserved in its own way. In
chosei-kuiki, forestry land vanishes rapidly in ‘early stage of urbanization’.
5) Agricultural land has been changed into building land in
shigaika-kuiki and into public facility land in
chosei-kuiki. Though the zoning system is thought to be effective as a means to prevent population sprawl, it is not necessarily thought to be effective as a means to prevent land development.
6) Agricultural land in
shigaika-kuiki will vanish after about 20 years. 23% of
chosei-kuiki is not in noshin-chiiki and 78% of
chosei-kuiki is not in
noyochi-kuiki.
7) The above-mentioned can be summarised as follows: (1) The zoning system is not so effective as a means to prevent land development. This indicates a defect of the system: it cannot control land value. (2) The zoning system only divides the suburbs of metropolitan areas into two kinds of zones. Plans of the suburbs should be comprehensive, indicating the preservation of agricultural land, and equipment of building land and public facility land. (3) A plan for agricultural promotion should be clearly shown in this plan.
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