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大气CO2和O3浓度升高对银杏构件生长的影响

徐文铎1;付士磊2;何兴元1;陈玮1;赵桂玲3;周园3;闻华1   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;2沈阳建筑大学建筑与规划学院, 沈阳 110168;3沈阳农业大学, 沈阳 110161
  • 收稿日期:2007-12-03 修回日期:1900-01-01 出版日期:2008-10-10 发布日期:2008-10-10

Effects of elevated CO2 and O3 on modular growth of Ginkgo biloba.

XU Wen-duo1;FU Shi-lei2;HE Xing-yuan1;CHEN Wei1;ZHAO Gui-ling3;ZHOU Yuan3;WEN Hua1   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2School of Architecture and Urban Planning, Shenyang Jianzhu University, Shenyang 110168;3Shenyang Agricultural University, Shenyang 110161, China
  • Received:2007-12-03 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10

摘要: 采用开顶箱模拟试验,探讨了大气CO2和O3浓度升高对银杏构件生长的影响。结果表明:高浓度O3抑制银杏主枝和侧枝生长(P<0.01);高浓度CO2对银杏粗生长影响不显著(P>0.05),但在高浓度O3和CO2、O3复合气体条件,银杏粗生长受到严重抑制(P<0.01);高浓度CO2可促进银杏叶片面积和干物质的增加,并能提高叶片含水量和抗干旱能力,但在高浓度CO2、O3复合气体条件下,叶片面积增加不显著(P>0.05),而干物质增加极显著(P<0.01);O3对银杏叶片构件生长有明显抑制作用,叶面积大小和干物质量明显低于对照株(P<0.05)。

关键词: 太白红杉, 生态可塑性, 球果, 种子

Abstract: The study on the effects of elevated CO2 and O3 on the modular growth of Ginkgo biloba showed that elevated O3 inhibited the growth of axialand lateral shoots significantly (P<0.01), while elevated CO2 had no significant effects on the diameter growth of G. biloba (P>0.05). The diameter growth of G. biloba was inhibited significantly by elevated O3 and its combination with CO2 (P<0.01). Elevated CO2 increased the leaf area, dry matter accumulation, water content, and drought resistance; while the combination of elevated CO2 and O3 only increased the leaf dry matter accumulation significantly (P<0.01) but had less effects on leaf -area. Elevated O3 had significant inhibitory effects on the leaf modular growth of G. biloba, under which, the leaf area and dry matter accumulation decreased significantly (P<0.05), compared with the control.

Key words: Larix chinensis, Ecological plasticity, Cone, Seed