Abstract
The locational field of Sendai has now been extended to as far as 50 km around Sendai (Fig. 1). In total, 227 plants were placed between 1952 and 1971; 44.9% have their main plant in the Tokyo Metropolitan Region and expanded into the Sendai field.
This field lies within a half a days's drive from the Tokyo Metropolitan Region and contains the main distribution center for the Tohoku market. Thus, plants located here can ship their products both to the Tokyo Metropolitan Region and throughout the Tohoku area. Forty seven of the main plants report that 28.4% of their products are consumed in the city of Sendai, 40.6% in Miyagi Prefecture, and 70.7% in the Tohoku region (Tables 1 and 2). This illustrates the importance of the distribution function played by Sendai (Table 3).
Almost all the plants in this field are located either on the main national roads or at the three main ports: Sendai, Shiogama, and Ishinomaki. Diffusion of the plants is caused by differentials in wages and land values (Fig. 2 and 3).