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Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
低温科学 = Low Temperature Science >
第80巻 >
高位泥炭地の尾瀬ヶ原になぜ低位泥炭地のヨシ−ミツガシワ群落が成立できるのか : 微地形・泥炭堆積過程が湿原植物群落の生育，分布に及ぼす影響
| Title: | 高位泥炭地の尾瀬ヶ原になぜ低位泥炭地のヨシ−ミツガシワ群落が成立できるのか : 微地形・泥炭堆積過程が湿原植物群落の生育，分布に及ぼす影響 |
| Other Titles: | Why is it possible for a low − level peatland plants community, Menyanthes trifoliata − Phragmites australis community, to establish itself on a high − level peatland, Ozegahara mire : Effects of microtopography and peat deposition on the growth and distribution of marsh plants communities |
| Authors: | 谷本, 丈夫1 Browse this author | | 淵脇, 智博2 Browse this author | | 徳永, 祐一3 Browse this author | | 軽部, 勲4 Browse this author | | 斉藤, 常栄5 Browse this author | | 後藤, 智哉6 Browse this author | | 鈴木, 貫司7 Browse this author |
| Authors(alt): | Tanimoto, Takeo1 | | Fuchiwaki, Chihiro2 | | Tokunaga, Yuichi3 | | Karube, Isao4 | | Saito, Tsuneei5 | | Gotoh, Tomoya6 | | Shuzuki, Kanji7 |
| Keywords: | 尾瀬ヶ原湿原 | | 微地形 | | 泥炭堆積 | | 湿原植物 | | 生育環境 | | Ozegahara mire | | microtopography | | peat deposition | | bog plants | | growth environment |
| Issue Date: | 31-Mar-2022 |
| Publisher: | 低温科学第80巻編集委員会 |
| Journal Title: | 低温科学 |
| Journal Title(alt): | Low Temperature Science |
| Volume: | 80 |
| Start Page: | 251 |
| End Page: | 267 |
| Abstract: | 尾瀬ヶ原湿原に見られる微地形とそこに生育する植物の生育環境を調べた．また，代表的な微地形地において，ピートサンプラーにより泥炭を採取し，泥炭堆積過程の比較を行なった．尾瀬ヶ原湿原に生育するミツガシワ，リュウキンカ，ヨシ−ミツガシワの各群落は，低層湿原地を指標する湿原植物群であるが，尾瀬ヶ原湿原においては浅い池溏，山地から流入する河川の氾濫原に生育していた．これらの場所は，中間あるいは高層湿原の上に，低層湿原が堆積する環境であった．泥炭層の厚さは南下田代の指紋状構造地では比較的浅く，深さ300cm前後で粘土層に達していた．中田代では深さ600cmまで達しても粘土層に届かない調査箇所，泥炭層位に乱れがなく，深さ500cm前後から粘土層に達する箇所，500cmより深い層位で泥炭と粘土層が互層になる箇所とが見られた．これらの結果から，湿原植物は必ずしも泥炭層に依存して生育しているわけではなく，その生育は，泥炭堆積後の微地形の変化によって成立する生育環境の違いに依存していた．また，尾瀬ヶ原湿原の微地形は，それぞれの場所で同時期に形成された可能性が高く，泥炭形成の主要因はブランケット湿原であると判定された． | | We investigated the microtopography of Ozegahara mire and the environment in which bog plants grow there. Peat was collected by a peat sampler from representative microtopography and the peat deposition process was compared. In Ozegahara mire, Menyanthes trifoliata community, Caltha palustris var. nipponica community and Phragmites australis − Menyanthes trifoliata community, which are indicators of low − level peatlands, grow in shallow pond pools and on the floodplains of rivers flowing in from the mountains. This site was an environment with low peat deposition conditions over intermediate and high peat layers. The thickness of the peat layer was relatively shallow in the patterned fen of Minami-shimotashiro, reaching the clay layer at around 300 cm in depth. At Nakatashiro, the peat layer was not disturbed and did not reach the clay layer even after reaching 600 cm in depth, while the peat layer reached the clay layer after about 500 cm in depth, and the peat and clay layers were interlayered at deeper levels. These results indicate that bog plants do not necessarily depend on the peat layer for their growth, but depend on the growth environment established by changes in the microtopography after peat deposition. The microtopography of Ozegahara mire is likely to have been formed at the same time at each site, and the main factor of peat formation depends on the blanket bog type. |
| Description: | 電子資料追加 |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/84988 |
| Appears in Collections: | 低温科学 = Low Temperature Science > 第80巻
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