Grassland history and factors maintaining grassland vegetation in and around Aso caldera, central Kyusyu, Japan

• Project/Area Number: 23501244
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geography
• Research Institution: Kumamoto University
• Principal Investigator: MIYABUCHI YASUO 熊本大学, 教育学部, 准教授 (30353874)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 草原植生 / 植生変遷 / 阿蘇カルデラ / 火山 / 噴火活動 / 人間活動

Outline of Final Research Achievements

Vegetation history during the last 90,000 years has been reconstructed using phytolith and macroscopic charcoal records obtained from tephra sections in and around Aso caldera, southwestern Japan. Phytolith assemblage from sections revealed that grassland vegetation dominated by Gramineae consistently occurred for 90,000 years. In the Holocene (the last 13,500 years), Miscanthus (pampas grass) grassland was established and continued consistently to the present in the eastern area whereas Sasa and Pleioblastus (warm-temperate dwarf bamboo) grassland has existed in the western area of the volcano. The difference of grassland vegetation transition in the Holocene grassland vegetation between the eastern and western regions can be explained as difference of fire regime between both areas inferred from macroscopic charcoal records.

Research Products

• [Journal Article] Tephrostratigraphy and eruptive history of post-caldera stage of Toya Volcano, Hokkaido, northern Japan (2014)
  • Author(s): Miyabuchi, Y., Okuno, M., Torii, M., Yoshimoto, M. and Kobayashi, T.
  • Journal Title: Journal of Volcanology and Geothermal Research Volume: 281 Pages: 34-52
  • DOI: 10.1016/j.jvolgeores.2014.05.019
  • Peer Reviewed
• [Journal Article] Unzen and Aso volcanoes, central Kyushu, Japan: Unzen’s new lava dome climb and 1991-95 pyroclastic flows and Aso’s active crater and one of the largest calderas in Japan (2013)
  • Author(s): Takarada, S., Miyabuchi, Y., Hoshizumi, H., Matsushima, T. and Nagai, D.
  • Journal Title: Bulletin of the Volcanological Society of Japan Volume: 58(2:A2) Pages: 1-35
  • NAID: 120006226385
  • Peer Reviewed
• [Journal Article] Lateral magma intrusion from a caldera-forming magma chamber: Constraints from geochronology and geochemistry of volcanic products from lateral cones around the Aso caldera, SW Japan (2013)
  • Author(s): Miyoshi, M., Shinmura, T., Sumino, H., Sano, T., Miyabuchi, Y., Mori, Y., Inakura, H., Furukawa, K., Uno, K., Hasenaka, T., Nagao, K., Arakawa, Y. and Yamamoto, J.
  • Journal Title: Chemical Geology Volume: 352 Pages: 202-210
  • DOI: 10.1016/j.chemgeo.2013.06.003
  • Peer Reviewed
• [Journal Article] Luminescence dating of volcanogenic outburst flood sediments from Aso volcano and tephric loess deposits, southwest Japan (2013)
  • Author(s): Tsukamoto, S., Kataoka, K.S. and Miyabuchi, Y.
  • Journal Title: Geochronometria Volume: 40 Issue: 4 Pages: 294-303
  • DOI: 10.2478/s13386-013-0135-4
  • Peer Reviewed
• [Journal Article] 2009年気象庁阿蘇山ボーリングコアの層序 (2013)
  • Author(s): 宮縁育夫・星住英夫
  • Journal Title: 火山 Volume: 58 Pages: 543-550
  • NAID: 110009686697
  • Peer Reviewed
• [Journal Article] Vegetation and fire history during the last 30,000 years based on phytolith and macroscopic charcoal records in the eastern and western areas of Aso Volcano, Japan (2012)
  • Author(s): Miyabuchi, Y., Sugiyama, S. and Nagaoka, Y.
  • Journal Title: Quaternary International Volume: 254 Pages: 28-35
  • DOI: 10.1016/j.quaint.2010.11.019
  • Peer Reviewed
• [Journal Article] Holocene vegetation history based on phytolith records in Asodani Valley, northern part of the Aso caldera, Japan (2012)
  • Author(s): Miyabuchi, Y. and Sugiyama, S.
  • Journal Title: Quaternary International Volume: 254 Pages: 73-82
  • DOI: 10.1016/j.quaint.2011.09.024
  • Peer Reviewed
• [Journal Article] K-Ar ages determined for post-caldera volcanic products from Aso volcano, central Kyushu, Japan (2012)
  • Author(s): Miyoshi, M., Sumino, H., Miyabuchi, Y., Shinmura, T., Mori, Y., Hasenaka, T., Furukawa, K., Uno, K., Nagao, K.
  • Journal Title: Journal of Volcanology and Geothermal Research Volume: 229-230 Pages: 64-73
  • DOI: 10.1016/j.jvolgeores.2012.04.003
  • Peer Reviewed
• [Journal Article] 平成24年7月九州北部豪雨による阿蘇地域の土砂災害 (2012)
  • Author(s): 久保田哲也・地頭薗 隆・清水 収・平川泰之・本田 健・飯島康夫・泉山寛明・海堀正博・北原哲郎・小林 浩・松本俊雄・松尾新二朗・松澤 真・宮縁育夫ほか
  • Journal Title: 砂防学会誌 Volume: 65(4) Pages: 50-61
  • NAID: 130005091402
  • Peer Reviewed
• [Journal Article] Landslides Triggered by the July 2012 Torrential Rain in Aso Caldera, Southwestern Japan (2012)
  • Author(s): 宮縁育夫
  • Journal Title: Journal of Geography (Chigaku Zasshi) Volume: 121 Issue: 6 Pages: 1073-1080
  • DOI: 10.5026/jgeography.121.1073
  • NAID: 130003373622
  • ISSN: 0022-135X, 1884-0884
  • Peer Reviewed
• [Journal Article] Post-caldera explosive activity inferred from improved 67-30 ka tephrostratigraphy at Aso Volcano, Japan (2011)
  • Author(s): Miyabuchi, Y.
  • Journal Title: Journal of Volcanology and Geothermal Research Volume: 205 Issue: 3-4 Pages: 94-113
  • DOI: 10.1016/j.jvolgeores.2011.05.004
  • Peer Reviewed
• [Journal Article] 90,000-year phytolith record from tephra section at the northeastern rim of Aso caldera (2011)
  • Author(s): Miyabuchi, Y., Sugiyama, S.
  • Journal Title: Quaternary International Volume: 246 Issue: 1-2 Pages: 239-246
  • DOI: 10.1016/j.quaint.2011.06.036
  • Peer Reviewed
• [Presentation] テフラ層序からみた洞爺火山の後カルデラ活動 (2014)
  • Author(s): 宮縁育夫・奥野 充・鳥井真之・吉本充宏・小林哲夫
  • Organizer: 日本火山学会2014年秋季大会
  • Place of Presentation: 福岡大学
  • Year and Date: 2014-11-02 – 2014-11-04
• [Presentation] Lateral magma intrusion from a caldera-forming magma chamber: Constraints from geochronology and geochemistry of volcanic products from lateral cones around the Aso caldera, SW Japan (2013)
  • Author(s): Miyoshi, M., Shinmura, T., Sumino, H., Miyabuchi, Y., Hasenaka, T. and Arakawa, Y.
  • Organizer: IAVCEI 2013 Scientific Assembly
  • Place of Presentation: Kagoshima
• [Presentation] Unusually high-temperature andesitic magma erupted shortly before the Aso-2 pyroclastic flow from Aso caldera, Japan (2013)
  • Author(s): Nishimura, K., Miyabuchi, Y., Inakura, H. and Kobayashi, T.
  • Organizer: IAVCEI 2013 Scientific Assembly
  • Place of Presentation: Kagoshima
• [Presentation] 中部九州阿蘇カルデラ形成後火山噴出物の噴火年代 (2011)
  • Author(s): 三好雅也、角野浩史、宮縁育夫、長尾敬介
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉市）
• [Presentation] 阿蘇山一の宮及び白水火山観測施設の観測井岩石コア試料のK-Ar年代 (2011)
  • Author(s): 長井雅史、池辺伸一郎、宮縁育夫、三好雅也、大倉敬宏、竹村恵二、渡辺一徳
  • Organizer: 日本火山学会2011年秋季大会
  • Place of Presentation: 大雪クリスタルホール（旭川市）
• [Presentation] Large-scale bouldery volcaniclastic apron by a possible gigantic outburst flood, Aso caldera, southwest Japan (2011)
  • Author(s): Kataoka, K., Miyabuchi, Y.
  • Organizer: 2011 PERC Planetary Geology Field Symposium
  • Place of Presentation: 北九州国際会議場（北九州市）
• [Presentation] 古地磁気方位からみた阿蘇火山中央火口丘群北西部の活動
  • Author(s): 宮縁育夫・望月伸竜・弥頭隆典・久保田恭平・渋谷秀敏
  • Organizer: 日本火山学会2012年秋季大会
  • Place of Presentation: エコールみよた（長野県御代田町）
• [Book] 阿蘇カルデラの地域社会と宗教 (2013)
  • Author(s): 吉村豊雄・春田直紀・宮縁育夫ほか
  • Total Pages: 420
  • Publisher: 清文堂