@article{oai:kanazawa-u.repo.nii.ac.jp:00043697,
 author = {Iwamatsu, Kayo and Okitsu, Susumu and 岩松, 佳代 and 沖津, 進},
 issue = {1},
 journal = {植物地理・分類研究, The journal of phytogeography and toxonomy},
 month = {Oct},
 note = {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.},
 pages = {1--6},
 title = {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},
 volume = {54},
 year = {2006}
}