底生動物の棲み込みによる河床固化

• 田代 喬

  独立行政法人土木研究所 水循環研究グループ自然共生研究センター

• 皆川 朋子

  独立行政法人土木研究所 水循環研究グループ自然共生研究センター

• 萱場 祐一

  独立行政法人土木研究所 水循環研究グループ自然共生研究センター

書誌事項

タイトル別名

• SUBSTRATUM ADHESION DUE TO BENTHOS INHABITATION
• - FIELD INVESTIGATION IN NAKATSU RIVER OF SAGAMI RIVER SYSTEMS -
• -相模川水系中津川における現況を事例として-

抄録

Channels with fewer disturbances have been caused not only by physical environmental factors such as armoring below dams, but also by biological factors. In a gravel river with decreased disturbances, the strengths of ‘substratum adhesion’ on some bed materials were investigated by using simple equipment made from a drag rake and a spring scale. These magnitudes were quantitatively evaluated by estimating the dimensionless critical shear stress of each material. Moreover, statistical analyses were carried out by using these measurements, hydraulic parameters and biological condition together. According to these results, the substratum adhesion was clarified to be caused by the inhabitation of benthic invertebrates and the substratum condition, and to reach about eight times as large as that without the invertebrates. Consequently, the substratum adhesion could be recognized as the serious issue in the controlling flow and disturbance regime for river ecosystem.

収録刊行物

• 水工学論文集

  水工学論文集 50 1249-1254, 2006

  公益社団法人 土木学会

キーワード

• Substratum adhesion
• benthos
• critical shear stress
• interstice in riverbed
• gravel river
• field investigation
• statistical analysis

詳細情報

• CRID: 1390282680148574464
• NII論文ID: 130004043780
• DOI: 10.2208/prohe.50.1249
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可