Reconstruct of the National Land Structure and the Port Policies : A Perspective Focusing on Introducing the Doshusei System and Promoting Economic Cooperation among the Areas Surrounding the Japan Sea

本文阐明了在全球化时代设想的doshusei区域集团制度下，区域集团加强分权和扩大权力的必要性。随着中国经济的全球崛起，日本环太平洋地区城市间的经济往来日益频繁，日本政府将通过建设连接环太平洋地区和环日本经济区的新交通网络，加快促进环太平洋地区和环日本经济区之间的经济往来。特别是位于日本中部的日中至直越一带，在连接这两个地区的过程中起到了不可缺少的作用。为了充分发挥日中-直越带作为重构日本经济格局的全国助推器的作用，日本政府应在关北-新越一体化区域块中，通过在区内已建立的港口城市和其他城市之间构建网络，发展一个特大城市。落实所设想的土住社区域区块体系，将关东-新越北部区域区块指定为“州”，并推动各区域区块的分权化，是重构日本经济格局不可或缺的先决条件。

This paper clarifies the necessity of increased decentralization and greater powers for regional blocks under the envisioned doshusei regional block system in the age of globalization. Growing economic exchanges among the cities in the Japan Sea Rim Region, which the global rise of Chinese economy has been invigorating, have made it inevitable that the Japanese government will accelerate efforts to facilitate the smoother economic exchanges between the Pacific Rim Regional Economic Zone and the Japan Sea Rim Economic Zone by developing new transportation networks across the Japanese archipelago interlinking the two Economic Zones. In particular, the belt zone from Hitachinaka to Naoetsu, which lies in the central part of Japan, is supposed to play an indispensable role in connecting the two. In order to make the most of the Hitachinaka-Naoetsu belt zone as an across-the-nation booster to restructure Japan's economic landscape, the Japanese government should develop a megalopolis in the integrated Northern Kanto-Shin-Etsu regional block by constructing networks among the established port cities and other cities in the zone. Putting the envisioned doshusei regional block system into effect, designating the Northern Kanto-Shin-Etsu regional block as a shu, and promoting decentralization in each regional block are indispensable prerequisites to restructuring Japan's economic landscape.