Shimōsa Plateau
The Shimōsa Plateau remains an important economic center of Japan. Compared to the post-war period, the distribution of economic activity on the plateau has changed. Primary industry accounts for only 5% of economic activity, secondary accounted for 27%, and tertiary 68%. Tertiary industry on the plateau consists of both the service industry serving the densely populated areas of northern Chiba Prefecture, as well as the extensive logistics network connecting the Keiyō Industrial Zone and Narita International Airport with other areas of Japan. While agriculture accounts for a small part of the overall economy on the Shimōsa Plateau, the northern and eastern area of the plateau is a large producer of vegetables for the Tokyo Metropolitan Region. The flat, eastern part of the Shimōsa Plateau continues to support rice production.