人口減少下における合併市町村の歳人変化―人口要因と面積要因に着目した試算とその示唆―

抄録

There have been many researches relating to the merger of municipalities especially since 2000 in Japan. Many of them estimate the administrative costs mainly with population and area. But they little consider each individual contribution of these factors, for they focus on the effects of the merger. This paper intends to make sure the ratio of population or area to the change of revenues in the merger-experienced municipalities comparing with the non-experienced municipalities. As the result, we can see that the scale of revenues of the merger-experienced municipalities is larger than that of the non-experienced municipalities even if both of them could have the same population and area; but the revenues of the non-experienced municipalities would exceed under a certain size of area, which differs by the scale of municipalities; the ratio of area is relatively higher in the small and medium sized municipalities, though the influences of population to the revenues are generally prevailing in many municipalities; the revenues would more decline in the larger sized municipalities as the population reduces.