書誌事項
- タイトル別名
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- Reconstruction of Fire History during the Last 130ka by Analysis of Microscopic Charcoal in Lake Biwa Sediment.
- ビワコ コテイ タイセキブツ ノ ビリュウタン ブンセキ ニ ヨル カコ ヤク 13マンネンカン ノ ショクブツ ネンショウシ
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抄録
In this study, Lake Biwa sediment covering the last 130ka is examined by analysis of the abundance of microscopic charcoal. Based on the abundance variation, the last 130ka is divided into four periods: 130ka to 10ka, 10ka to 1.5ka, 1.5ka to A. D. 1920, and since 1920. Charcoal abundance was low between about 130ka and 10ka, which indicates that climatic variation has not greatly influenced the frequency of forest fires. Charcoal abundance increased markedly from 10ka, and the highest abundance of charcoal between about 10ka and 1.5ka was associated with the ancient human activities after the Jomon period. The reduction of charcoal abundance since about 1.5ka was probably derived from changes in ancient human activities: the shift to agricultural activities and so on. Charcoal abundance has increased since 1920 due to combustion of organic substances for fuel. Consequently, charcoal abundance evidence suggests that variation of fire frequency around Lake Biwa was affected more by human activities than by climatic variation.
収録刊行物
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- 第四紀研究
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第四紀研究 40 (2), 97-104, 2001
日本第四紀学会
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詳細情報 詳細情報について
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- CRID
- 1390001206495327744
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- NII論文ID
- 10007430514
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- NII書誌ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
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- NDL書誌ID
- 5737552
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可