人口中心によるわが国の人口移動および人口分布の解析

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In this paper, characteristics of the distribution of population of Japan in recent years are clarified by using the indices of central point of the distribution of population, namely, center of population (Bevolkerungsschwerpunkt), (X^^-, Y^^-) and population center (Zentralpunkt der Bevolkerung), (X*, Y*)-which are simply called, here, central points of population-, where center of population is the "center of gravity" of a mass made of "population" and population center is the point at which the total length of trips of all the persons in the area observed becomes minimum when all the persons want to gather at a point by moving along straight lines combining their residential places and the point where they want to gather, X^^- and Y^^- are, respectively, longitude and latitude on which center of population appears, and X* and Y* are, respectively, longitude and latitude on which population center appears. Here, center of population and population center are calculated by age, sex, and region. From the results obtained, it was found that (1) the locations of central points-the locations of "center of population," (X^^-, Y^^-) and "population center" (X*, Y*) as mentioned above -of male population of the whole area of Japan between 0 and 4, 5 and 9, and 10 and 14 years of age appeared in the neighbourhood of those of female population of the whole area of Japan between 0 and 4, 5 and 9, and 10 and 14 years of age, respectively, (2) the locations of central points of male populations of the whole area of Japan between 10 and 14, 15 and 19, 20 and 24, and 25 and 29 years of age appeared widely apart from each other, (3) the locations of central points of male population of the whole area of Japan between 20 and 24 years of age was especially widely apart from that of female population of the whole area of Japan between 20 and 24 years of age. (4) the locations of central points of female populations of the whole area of Japan between 40 and 44, 45 and 49, 50 and 54, 55 and 59, 60 and 64, 65 and 69, and 70 and 74 years of age appeared in the vicinity of those of male populations of the whole area of Japad between 45 and 49, 50 ann 54, 55 and 59, 60 and 64, 65 and 69, 70 and 74, and 75 and 79 years of age, respectively, and (5). the locations of central points of distribution of regional population did not move widely from 1965 to 1970, although those of the population of Japan moved during the same period of time. From these results, we can conclude as follows: (1) Childrens live with their parents and do not migrate independently of their parents. And sex ratio of children in each region shows approximately a given value. Therefore, the locations of central points of population of childrens in the whole area of Japan of male appear in the neighbourhood of those of population of childrens of female in the whole area of Japan. (2) The male populations between 10 and 14, 15 and 19, 20 and 24, and 25 and 29 years of age migrate widely. Therefore, the locations of central points of male populations of the whole area of Japan between 10 and 14, 15 and 19, 20 and 24, and 25 and 29 years of age appear widely apart from each other. (3) Since the behavior in the choice of living place of male between 20 and 24 years of age is differenn from that of female between 20 and 24 years of age, the locations of central poinis of male population of the whole areaof Japan between 20 and 24 years of age appear widely apart from that of female population of the whole area of Japan between 20 and 24 years of age. (4) Since male and female of middle age are mostly connected with each other by marriage, the pattern of distribution of male population of middle age is approximately the same as that of female population of middle age and the locations of central points of female populations of middle age appear in the vicinity of those of male populations of middle age. And (5) the pattern of the distribution of population of Japan changes as time goes by, but the pattern of the distribution of population within each region of Japan does not change. Therefore, the locations of central points of population of Japan move as time goes by, whereas the locations of central points of population within each region of Japan do not change.
流通経済大学の論文

人口中心によるわが国の人口移動および人口分布の解析

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