AN EXPERIMENTAL STUDY OF THE REACTIONS OF TERRESTRIAL ECOSYSTEMS FOR RISING CO2 CONCENTRATION

陆地生态系统对二氧化碳浓度上升反应的实验研究

• 批准号: 08408019
• 负责人: OIKAWA Takehisa
• 金额: $ 26.88万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08408019/
• 关键词: GLOBAL WARMING; EFFECT ON PLANTS; HIGH CO2 LEVEL; INTERSPECIFIC COMPETITION; TGC; CTGC; 植物影響; TGC; CTGC; 気孔密度; CO_2フラックス; 地表面湿潤度; ガス交換法; チトクロム経路; シアン耐性経路; 森林土壌O層; 呼吸速度

We established a satisfactory controlling system which can regulate air temperature and CO2 concentration with a high accuracy in the Temperature-Gadient Chamber (TGC) and CO2-Temperature Gradient Chamber (CTGC), newly built four years before on the Environmental Research Center (ERC), University of Tsukuba.Using the TGC and the CTGC, we investigated the effects of global warming on growth of plants. In this year, we used one of evergreen broad-leaved tree species, Castanopsis cuspidate var. sieboldii and two commonly co existing weeds distributed widely in the world, Imperata cylindrica (C4) and Festucca arundinacea (C3), both belonging to family Gramineae. Growth of I. cylindrica plants was considerably promoted at the expense of F. arundinacea shoots during summer. This result clearly exemplifies that global warming will be favorable for C4 plants rather than C3 plants, and thus will bring about a rapid change in species composition of a C3 and C4 mixed grassland.We issued the report which summarized major results obtained during these four years using the TGC and the CTGC.

我们在筑波大学环境研究中心（ERC）4年前新建的温度梯度箱（TGC）和CO2温度梯度箱（CTGC）中建立了一个令人满意的控制系统，可以高精度地调节空气温度和CO2浓度，并利用TGC和CTGC研究了全球变暖对植物生长的影响。本年度采用万年青阔叶树种之一的苦槠。与世界上广泛分布的禾本科杂草白茅（C4）和高羊茅（C3）共生。我的成长cylindrica植物的生长受到显著促进，而F.高羊茅在夏天发芽。这一结果清楚地表明，全球变暖将有利于C_4植物而不是C_3植物，从而导致C_3和C_4混播草地物种组成的迅速变化。

项目成果

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Ishibashi, M.、Usuda, H. 和 Terashima, I.：“24 小时“雨”处理导致核酮糖-1,5-二磷酸羧化酶的损失充分解释了菜豆叶片光合速率的降低”植物生理学。111。635-640（1996）

Alexandrov G.A.,Y.Yamataga and T.Oikawa: "Towards a model for projecting Net Ecosystem Production of the world forests"Ecological Modelling. 123. 183-191 (1999)

Alexandrov G.A.、Y.Yamataga 和 T.Oikawa：“建立预测世界森林净生态系统生产的模型”生态模型。

Alexandrov G.A.,Y.Yamagata,T.Oikawa: "Towards a model for projecting Net Ecosystem Production of the world forests."Ecological Modelling. 123. 183-191 (1999)

Alexandrov G.A.、Y.Yamagata、T.Oikawa：“建立预测世界森林净生态系统生产的模型。”生态模型。

Saigusa,N.,S.Liu,T.Oikawa,& T.Watanabe: "Seasonal Change in CO_2 and H_2O exchange between grassland and atmosphere." Annales Geophysicae. 14. 342-350 (1996)

Saigusa，N.，S.Liu，T.Oikawa，

Liu,X.: "A study of correlations of scalar quantities in the atmo-spheric surface layer." Boundary Layer Meteor.87. 499-508 (1998)

Liu,X.：“大气表层标量相关性的研究。”