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Data No. 1
Title Soil map around the 4-ha vegetation plot in the deciduous site
File type jpeg
Description After many points of soil survey in and around the 4-ha vegetation plot, we make a soil map and discuss the relationship between soil type and surface geology and topography. On the hillside, where is south to southeast part of the plot, Leptosols are distributed; that parent rocks are basalt and sedimentary rocks. On the flat area, where is west to northeast part of the plot, Plinthosols are distributed; that have plinthite (accumulation layer of iron) in the deep horizon. Along the streams, sandy soils named Arenosols are distributed. We observe small round gravels at the distributed areas of Plinthosols near the streams; the round graves would be transported and deposited by some large rivers ten thousands of years ago.
Sample
Data source Soil Geochemistry Lab. Forestry and Forest Products Research Institute
Contact CWCM research group, FFPRI
Data Soil map (jpeg)
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Data No. 2
Title Distribution of soil thickness around the 4-ha plot in the deciduous site
File type jpeg
Description The soil thickness is very thin (less than 50 cm) at the hillsides of the plot: the distributed area of Leptosols. In contrast, it is relatively thick (partly exceeds 2 m) at flat areas and along the streams of the plot: the distributed area of Plinthosols and Arenosols. Thus, the soil thickness is different in each soil type.
Sample
Data source Soil Geochemistry Lab. Forestry and Forest Products Research Institute
Contact CWCM research group, FFPRI
Data Map of soil thickness (jpeg)
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