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五、产业的地区结构(布局)的变化由于不同的产业部门对地理条件有着不同的要求,因此,不同产业部门的此消彼长,乃至产业部门结构的变化,必将引起产业的地区结构(布局)的变化。五、六十年代是日本的重、化学工业化时代,钢铁、石油化学、造船等工业是当时的“朝阳产业”,而这些产业最宜于建设在沿海工业区,结果日本的工业越来越集中于靠近太平洋沿岸的东京——横滨、大板——神户、名古屋这三大都市圈,从1962年至1970年,每年约有120万至130万人流入三大都市圈,而从三大都市圈返回地方的人口仅为流入人口的十分之一。从1973年开始情
V. Changes in the regional structure (layout) of industries As different industrial sectors have different requirements for geographical conditions, the changes in different industrial sectors and even changes in the structure of the industrial sector will inevitably lead to the regional structure of the industry ( Changes in layout). In the 1950s and 1960s, Japan was an era of heavy and chemical industrialization. Steel, petrochemistry, shipbuilding and other industries were the “sunrise industries” of the time. These industries were most suitable for construction in coastal industrial areas. As a result, Japan’s industry was increasingly concentrated. In the three metropolitan areas of Tokyo, Yokohama, Slabs, Kobe, and Nagoya, which are near the Pacific coast, from 1.22 to 1.70, about 1.2 million to 1.3 million people flowed into the three metropolitan areas each year from three major cities. The population returning to the area is only one-tenth of the influx of people. Beginning in 1973