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- Title
Vegetation history after the late period of the Last Glacial Age based on phytolith records in Nangodani Valley basin, southern part of the Aso caldera, Japan.
- Authors
Miyabuchi, Yasuo; Sugiyama, Shinji
- Abstract
Vegetation history after the late period of the Last Glacial Age has been reconstructed using phytolith records obtained from three tephra sections in the Nangodani Valley basin, southern part of the Aso caldera, south‐west Japan. The topography of the Nangodani Valley basin is divided into three types: somma (caldera rim and wall), caldera floor (central valley) and post‐caldera central cone slope. The vegetation transitions after the late period of the Last Glacial Age in the basin vary between these topographic types. The differences can be explained based on human activities in the valley basin. Grassland dominated by Sasa and Pleioblastus dwarf bamboos (before 8 ka) and Miscanthus and other Andropogoneae pampas grasses (after 8 ka) occurred in the central valley and on the post‐caldera central cone slope, which were strongly affected by human activities including a long period of burning. In contrast, forest with an understory of Bambusoideae plants was preserved on the caldera rim and wall, which was inaccessible because of its steep topography, during the Holocene.
- Subjects
JAPAN; GLACIATION; CALDERAS; UNDERSTORY plants; VALLEYS; PLANTS; VOLCANOLOGY; BAMBOO
- Publication
Journal of Quaternary Science, 2020, Vol 35, Issue 1/2, p304
- ISSN
0267-8179
- Publication type
Academic Journal
- DOI
10.1002/jqs.3153