A comparative study of heat balance and CO2 uptake between a varzea covered with plants for biodiesel and a varzea with no vegetation

• Project/Area Number: 19500882
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geography
• Research Institution: Hiroshima University
• Principal Investigator: TSUCHIYA Akio Hiroshima University, 大学院・総合科学研究科, 助教 (00263632)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 中部アマゾン / バルゼア / 浸水 / 熱収支 / 蒸発 / 蒸散流 / 蒸散 / 樹木 / 水文環境 / 水蒸気パラメーター / 代賛燃料用作物

Research Abstract

中部アマゾンのバルゼアとテラフィルメで観測を行った。前者の土壌水分は深さ10cm で0.47m^3・m^<-3>、30cmで0.65m^3・m^<-3>と高かった。前者は潜熱が正味放射の60~80%を占め、日蒸発量は3.12±6.00 mm・d^<-1>と、平均値・振幅とも高かった。この値は森林よりも小さいが、結露は林冠上では見られない。バルゼア林の樹木の蒸散は飽差依存で、一日に数十リットル以上の水を吸引し、昼間の樹幹周囲長は夜間より1~2mm縮小していた。

Research Products

• [Journal Article] Micrometeorological environments and biodiversity in a closed forest and at a tree-fal1 gap in central Amazonia. (2009)
  • Author(s): Tsuchiya, A., Tanaka, A.
  • Journal Title: Ciencia Floreta1 18-4 Pages: 415-425
  • Peer Reviewed
• [Journal Article] (2008) : Micrometeorological environments andbiodiversity in a closed forest and at atree-fall gap in central Amazonia (2008)
  • Author(s): Tsuchiya, A., A. Tanaka
  • Journal Title: Ciencia Florestal 18-4 Pages: 415-425
  • Peer Reviewed
• [Journal Article] (2008) : Sap flow measurements of red pines : Developmentson a horizontal scale (2008)
  • Author(s): Tsuchiya, A.
  • Journal Title: 日本生気象学会誌, 日本生気象学会 45-2 Pages: 57-71
  • Peer Reviewed
• [Journal Article] Sap flow measurements of red pines : Developments on a horizontal scale. (2008)
  • Author(s): Tsuchiya, A.
  • Journal Title: 日本生気象学会誌 45-2 Pages: 57-71
  • NAID: 10024916987
  • Peer Reviewed
• [Journal Article] Difference in soil CO_2 fluxes at surface layers between a cutover area and a secondary forest during rainy and dry seasons in central Amazonia (2008)
  • Author(s): Tsuchiya, A., A. Tanaka
  • Journal Title: 生態環境研究 (印刷中)
• [Journal Article] (2007) : Difference in soil CO_2 fluxes at surfacelayers between a cutover area and asecondary forest during rainy and dryseasons in central Amazonia (2007)
  • Author(s): Tsuchiya, A., A. Tanaka
  • Journal Title: 生態環境研究, 国際生態学センター 14-1 Pages: 1-12
• [Journal Article] (2007) : Growth of trees and microclimates in a gap dependent forest incentral Amazonia. Ciencias Naturais (2007)
  • Author(s): Tsuchiya, A., A. Tanaka, N. Higuchi, P.B. Lisboa
  • Journal Title: エミリオゲルジ博物館(ブラジル・ベレン) 1-2 Pages: 47-63
• [Journal Article] Growth of trees and microclimates in a gap dependent forest in central Amazonia (2007)
  • Author(s): Tsuchiya, A., A. Tanaka, N. Higuchi, P.B. Lisboa
  • Journal Title: Boletim do Museu Paraense Emilio Goeldi, Cienci as Naturais 1-2 Pages: 47-63