洪水攪乱影響の違いがツルヨシの形態的特徴と繁茂量・拡大幅に与える影響

• 青木 信哉

  埼玉大学大学院 理工学研究科

• 田中 規夫

  埼玉大学大学院 理工学研究科

• 八木澤 順治

  埼玉大学大学院 理工学研究科

書誌事項

タイトル別名

• EFFECTS OF FLOOD DISTURBANCE ON THE MORPHOLOGY, PRODUCTIVITY AND RUNNER-EXPANSION OF Phragmites japonica

抄録

he effect of flood disturbance on the morphology of runners, plant productivity and runner-expansion characteristics of Pharagmites japonica was investigated at midstream of the Arakawa River. The dynamic growth model of P. japonica was developed considering the effect of disturbance, i. e., the difference of runner morphology and shoot productivity in the parent colony. The aboveground biomass distribution along the distance from the parent colony was well represented by the model. For analyzing the effect of flood disturbance interval, maximum water levels at three flood events were calculated and evaluated whether the habitat of P. japonica were inundated or not. In addition, the threshold friction velocity of the average grain diameter was compared with the friction velocity at the flood event. Although the gravel movement possibility has a little different tendency with the damaged situation of P. japonica, the clear relationship between the flood interval and the productivity in each habitat is found. The analysis indicates the possibility to calculate the plant productivity under the effect of flood disturbance.

収録刊行物

• 水工学論文集

  水工学論文集 51 1255-1260, 2007

  公益社団法人 土木学会

キーワード

• flood disturbance
• threshold friction velocity of gravel
• Phragmites japonica
• plant morphology
• runner-expansion

詳細情報

• CRID: 1390282680147497856
• NII論文ID: 10021137809
• NII書誌ID: AA1045915X
• DOI: 10.2208/prohe.51.1255
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可