THE POPULATION DIFFERENCE BETWEEN DAY AND NIGHT IN JAPANESE CITIES AND THEIR COMMUTATION AREA
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概要
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The population difference between day and night in Japanese cities were first increased in big cities in the boom soon after the World War I. The increase of population was specially obvious in Tokyo after the Great Earth-quake of 1923. After the World War II, owing to the war-damages and some other reasons, almost the same results have been apparent in local cities. Namely, the population difference between day and night in the cities acid their commutation area have been more eminent after the war, compared with those of pre-war Japan. The population difference between day and night in Tokyo, Osaka, Hiro-shima and some other cities was observed and the following results were obtained. (1) Except those cities which receive daily sightseeing visitors, about 70_??_80% of the moving population in daytime is regular from rural districts to urban. (2) Of the whole moving population of a city between day and night, the inner moving population is larger than the outer moving population, whose difference is increased 4 according to the extension of city area. (3) The moving population between rural districts and urdan (the outer moving population) is small in number but the moving distance is farther, which imposes on us future considerations in regards, to preventing the fatigue and physical disorders of the commuters including students. (4) The regular moving population in daytime was observed according to the means of traffics and the kinds of the works they concern. The mental workers were predominant and there were more men than women in number. (Table 1) (5) The commutation area of the large city population between day and night is larger than the small city, but in local cities, its. commutation area has been larger since the end of the war. (Table 2. Tokyo) (6) It is not so different from the case in a pre-war city that the recent commuting area of the city population between day and night is about 30km which takes about one hour to cover. (Fig. 1. Osaka, Fig. 2. Hiroshima) (7) Therefore, it may be concludedd that the first limit (the Inner Suburbs) is within 30km and the second limit (the Outer Suburbs) is over 30km to 60km from the city center, and over 60km can be considered to be out of the sphere of daily city lives.
- The Association of Japanese Geographersの論文
The Association of Japanese Geographers | 論文
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