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Effect of CO_2 concentration on photosynthesis in deciduous broad-leaved tree species

Research Project

Project/Area Number 03660150
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionNiigata Univ.

Principal Investigator

MARUYAMA Koohei  Niigata Univ. Fac. of Agric., Professor, 農学部, 教授 (30018535)

Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1993: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsPhotosynthesis rate / CO_2 concentration effect / Decidous broad-leaved tree species / Temperature effect / Water stress effect / Conductance / 個葉レベル / 水ポテンシャル / 水ストレス / 個体レベル / 短期処理効果
Research Abstract

(1) Effects of CO_2 levels on net photosynthesis of single leaf in several deciduous broad-leaved tree species : P_n and the saturated PAR were generally increased with inceasing CO_2 levels in most species tested. From the light-photosynthesis curves, we classified fagus crenate(Fc) as low CO_2-weak light use type, Zelkova serrata(Zs) as high CO_2-weak light use type, Alnus firma(Af) as high CO_2-strong light use type, and Ginkgo biloba(Gb) as high CO_2-intermediate type.
(2) Effects of short-term CO_2 levels and temperatures on the photosynthesis and respiration of some deciduous broad-leaved tree species seedlings : Temperature-photosynthesis curves in strong light showed a distinct optimum curves. The optimum temperatures were found at 15-35゚C, the values shifted from low to high temperatures with increasing CO_2 levels. Among five species, Af & W.hortensis(Wh), shrub species, had a higher P_n and the broad optimum ranges. Fc, Qc & Gb, tree species, exhibited a contrasting pattern. (3) Effects of CO_2 levels on a leaf photosynthesis in Qc, Q.dentata(Qd) and Wh seedlings : CO_2 levels that saturated P_n were found above 900ppm in 2Quercus species, and 600ppm in Wh. The water use efficiency enhanced with higher CO_2 levels irrespective of species.
(4) Effects of high CO_2 levels and water stress on gas exchange in Alnus firma : The rates of Pn, Tr and g_s decreased with increasing water stress. The critical water potentials were found at -12, -10, -8 bars, respectively. COn_2 effects were observed in Pn and g_s under well-watered conditions above -8 bar water potentials.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 丸山幸平: "ブナ林の生態学的研究(39)-林内のCO_2濃度分布について-" 新潟大学農学部演習林研究報告. 27. 125-139 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] MARUYAMA,Koohei: "Ecological studies on natural beech forest(39) -Gradients in atmospheric CO_2 concentration within natural Japanese beech forest and man-made Japanese black pine forest-" Res.Bull.Niigata Univ., Forests. 27. 125-139 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 保科 功、梁 乃甲・丸山 幸平: "若干の落葉広葉樹の個葉の光合成特性に及ぼすCO_2濃度効果" 日本林学会104回大会(盛岡).

    • Related Report
      1992 Annual Research Report
  • [Publications] 梁 乃甲、保科 功、丸山 幸平: "若干の落葉広葉樹稚樹の光合成・呼吸速度に及ぼすCO_2濃度と温度の効果" 日本林学会104回大会(盛岡).

    • Related Report
      1992 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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