抄録
It is said that the increase and decrease of rural population are influenced by the standard of living, but I think that they are influenced beside by the cultural factors in many cases.
The rate of population increase in each village of Saku Basin, during 1875-1947 is shown in Fig. 1. The rates are high in marginal districts of Basin, and low in its centeral districts. The relation between the rate of population increase and the economic factors or the cultural factors in this Basin are as follows.
1. The correlation between the rate and the average income in each village as economic factors shows a reversed relation.
2. In the correlation of the distance synchronous from the center (Koomorormachi) as cultural factors with the rates, the more remost the districts are, the higher rates they have.
3. There is the correct correlation between the area of cultivated land as the basis of farmer's life, the area of potential arable land and the rate of population increase.
From what was mentioned above, I think that the increase and decrease of rural population in Saku Basin are influenced not by the economic factors, but by the cultural factors.
