Species composition and habitat of Quercus serrata community as riparian forest of gravel-bed river in the central Japan
2007
Yoshikawa, M.(Tokyo Univ. of Agriculture and Technology, Fuchu (Japan)) | Noda, H. | Hiranaka, H. | Hukusima, T.
On the floodplains of gravel-bed rivers in Central Honshu, we can often observe deciduous broad- leaved forests dominated by Quercus serrata. In order to clarify ecological characteristics of these Quercus serrata forests, we surveyed species composition and substratum of the ground surface on the floodplains of the Sabi, Daiya and Komu river. The substrata were sandy alluvial deposits in all stands, showing those Quercus serrata forests were established after river flooding and accumulation of sandy deposits. Riparian Quercus serrata forest stands had different species composition compared with coppice forest stands around each river. Riparian stands included elements of ravine forest dominated by Zelkova serrata, whereas they were lacking Ericaceae species and tall herb species that were common in coppice forest. WI are about 85 deg C.month and CI are less than -10 deg C.month respectively in the studied areas. This means that the areas are located in intermediate warm-temperate zone. Therefore, we concluded that the Quercus serrata forest established on floodplain was regarded as a type of riparian forests of gravel-bed rivers in low elevation area of the Central Japan.
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