マングローブは日本本州でも育つ？
Around 4000 to 6000 species of plants occur naturally in Japan. The vegetation varies widely from subtropical forest in the south to coniferous forest in the north. In the subtropical zone, mangroves, cycads and tree ferns can be found. In the warm-temperate climate of Kyūshū, Shikoku and south-western Honshū, the dominant vegetation is broad-leaved evergreen forest with many oaks. In north Honshū and south-west Hokkaidō the climate is cool-temperate with broad-leaved deciduous trees including Japanese beech ("Fagus crenata") and oaks like the konara ("Quercus serrata"). Conifers are dominant in much of Hokkaidō and in the mountains of central and northern Honshū with spruces and firs growing. In the highest mountains there is a zone of Arctic–alpine plants including the low-growing Siberian dwarf pine ("Pinus pumila").
no