Agriculture, forestry, and fishing in Japan
Agriculture, farming, and fishing form the primary sector of industry of the Japanese economy together with the Japanese mining industry, but together they account for only 1.3% of gross national product. Only 20% of Japan's land is suitable for cultivation, and the agricultural economy is highly subsidized.
Afforestation in Japan
During this twenty-year period, open pastures were cultivated in the Hokkaido region of northern Japan in an effort to attract more people to the area for agricultural development. Over forty-five thousand households immigrated to the Hokkaido region, but only 28.6% stayed. Most of the cultivated pasture land was abandoned and returned to the Japanese government from 1966-1977, as climate conditions in the area were not conducive to good crop yield. The shift from old growth forest to pasture left large areas of reduced soil fertility that trees were unable to recolonize. Due to a lack of a seed bank and competition with dwarf bamboo, human involvement was necessary to reforest the area. From 1978-2005 native trees with high growth rates were planted in plantations. It was mostly conifers that were planted in the area, but it has aided in the recovery of a conifer-broadleaf mixed forest.