Abstract
The material-flow characteristics of Hachijo Island were evaluated. The local data through interviews were used as well as statistical data. The total amount of import was estimated as 218,952(t/year), which was ten times of the exported amount (28,059 t/year). Sands and gravels for maintaining sandy beaches were dominant materials in the imports contributing to huge stocks in the island. Maritime containers gave the largest amount in the exports and would cause the environmental burden. The estimated waste generation in Hachijo Island (1,394 g/capita/day) was much larger than that of Japan average (975 g/capita/day). Most of the sludge and construction wastes were recycled, but general recyclable wastes were exported to the mainland because no recycling facility is located in the island. From these results, it is indicated that the environmental burden generated in Hachijo Island can be bigger than that in the mainland.
