富士山高山域の異なる土壌粒径上に生育するオンタデの地下形態

• 岩松, 佳代

• 沖津, 進

• Iwamatsu, Kayo

• Okitsu, Susumu

Bibliographic Information

Other Title

• フジサン コウザンイキ ノ コトナル ドジョウ リュウケイ ジョウ ニ セイイク スル オンタデ ノ チカ ケイタイ

Abstract

Polygonum weyrichii var. alpinum is a dominant species on the alpine gravel deserts of Mt. Fuji, which have wide variations in soil particle size. To clarify why P . weyrichii can dominate over a wide range of soil particle size, this study compares the root morphology of P . weyrichii growing at two habitats with different soil particle sizes. The study area was divided into two sites based on the soil particle sizes, that is, large scoria site（L-site） and small scoria site（S-site）．The L-site had large scoria layer about 10 cm in depth whereas the S-site only on the surface. The root morphology and the root area were different between the sites. At the L-site, P . weyrichii had abundant coarse adventitious root（≧1 mm in diameter）in the10to20cmlayer.AttheS-site,fineadven-titious root（＜1mm）develops vigorously in the first 10 cm of soil. The large scoria layer is dryer than the sand layer. The expansion of coarse adventitious roots at the L-site was considered to be adaptation for unfavorable environments. The adventitious roots as well as a vertical rhizome are important for growing on the gravel site.

Journal

• 植物地理・分類研究 = The journal of phytogeography and toxonomy

  植物地理・分類研究 = The journal of phytogeography and toxonomy 54 (1), 1-6, 2006-10-31

  植物地理・分類学会

Keywords

• Mt.Fuji
• Polygonum weyrichii var. alpinum
• root morphology
• soil particle size

Details

• CRID: 1050282677587893248
• NII Article ID: 10018690525
• NII Book ID: AN00307805
• ISSN: 03886212
• NDL BIB ID: 8629628
• Web Site: http://hdl.handle.net/2297/00050039
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8629628
• Text Lang: ja
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN