Together with the active dispersion of plants from the inside toward the outside of Nagoya City, there are many plants newly established in the city and many diffused within the city. The number of the diffused plants in 1969 is 407, which is more than that of the newly established plants (231) and also more than that of the dispersed plants (149). The dispersed plants are usually bigger than the diffused plants and newly established ones. This may be a mechanism of the discharging of bigger plants from the city area and the accumulating of small plants in the big city, Nagoya (Figs. 1, 2, 3, 4, 5).
The locational fields within the city may be divided into three kinds, that of discharging, metabolic and absorbing. The central wards, Naka, Nakamura, Higashi, Mizuho and Atsuta form the discharging field in which the removers to the outside of the wards are more than the total of the number of the newcomers and that of the newly established plants. However, in the neighboring wards, Minami, Nakagawa, Nishi, Kita, Chikusa, all the newly located plants, newcomers and newly established plants, are more than the removers. And we may discern these wards form the metabolic locational field. The other fringe wards, Minato, Showa, Midori, Moriyama form the absorbing field, in which only the newcomers among the newly located plants count more than the removers (Figs. 2, 3, 4, 5, 6).
Each of the five wards forming a discharging field has much commercial land and less vacant land. And a metabolic field has two different areas respectively in each ward; one is an old Nagoya City which has much commercial and manufacturing land and less vacant land, and the other is an area newly incorporated into Nagoya City which has much vacant land. Needless to say, four wards forming absorbing field have much more vacant land (Figs. 7, 8, Table 1).
In the above mentioned locational fields, the discharge of plants has been brought about owing to the shortage of land to meet with the expansion of production as well as the severe control of noises and pollution. As for the diffused plants, they are absorbed on the vacant land, most of which are leased land under less complaints of grievance against the loud noises and pollution. And in comparison with these two factors, both pulling force by users and better locational conditions have only a slight influence on the diffusion of plants (Tables 2, 3).
To speak of the products of plants in Nagoya City, more than half of them are consumed by users in Nagoya City. On the other hand, the supply of materials from Nagoya City exert much more influences either on the diffusion or on the dispersion of plants, seeing that they get more than 75.0% of their materials from Nagoya City. And I think I must add that subcontructed plants and abundant labor force, accumulated within the city are also the basic condition which make those small plants stay in the city.
抄録全体を表示