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植物研究 ›› 1999, Vol. 19 ›› Issue (1): 53-59.

• 论文 • 上一篇    下一篇

长白落叶松生理生态特性的CO2响应及意义

冯玉龙1, 王丽华2, 敖红3, 聂江力3, 王文章3   

  1. 1. 河北大学, 保定 071002;
    2. 齐齐哈尔大学, 齐齐哈尔 161006;
    3. 东北林业大学, 哈尔滨 150040
  • 收稿日期:1998-03-10 出版日期:1999-03-15 发布日期:2016-06-14
  • 基金资助:
    国家"八五"科技攻关项目(85-018-01-04-06)部分研究内容。

CO2 RESPONSESOF PHYSIOLOGICAL ECOLOGY CHARACTERISTICS IN LARIX OLGENSIS HENRY AND ITS SIGNIFICANCE

d:\PDF\.pdfFeng Yu-long1, Wang Li-hua2, Ao Hong3, Nie Jiang-li3, Wang Wen-zhang3   

  1. 1. Hebei University, Baoding 071002;
    2. Qiqihar University, Qiqihar 161006;
    3. Northeast Forestry University, Harbin 150040
  • Received:1998-03-10 Online:1999-03-15 Published:2016-06-14

摘要: 人工气候室中测定了不同CO2(0-1000mgm-3)浓度时不同无性系长白落叶松二年生扦插苗的净光合速率、蒸腾速率和水分利用率等,并做了回归分析。结果表明,净光合速率和水分利用率随CO2浓度的增加而升高,蒸腾速率随CO2浓度的增加而降低,但不同无性系的CO2响应方式及强度不同。不同无性系长白落叶松的CO2补偿点亦不同。这些差异是无性系选择的基础。在无性系选择中,净光合速率和水分利用率的CO2响应具有重要的意义,而CO2补偿点意义不大。在未来高CO2环境中,长白落叶松的生长将加快,分布区将扩大。

关键词: 长白落叶松, 生理生态特性, CO2 响应, 无性系选择

Abstract: Net photosynthetic rate, transpiration rate and water utilization efficiency of 2-year-old cutting seedlings of different clones of Larix olgensis Henry growing in phytotron, were measured at different CO2 concentration, and regressive analysis was done.The results showed that net photosynthetic rate and water utilization efficiency increased, while transpiration rate decreased, with the increasement of CO2 concentration.But the parttern and intensity of CO2 response of different clone were different.CO2 compensation point of different clone of Larix olgensis Henry was different either.These diversity were the fundation of clone selection.CO2 respones of net photosynthetic rate and water utilization efficiency had very important significance in clone selection, while CO2 compensation point was senseless.Growth of larix olgensis Henry might become faster and its distribution area might become bigger in future higher CO2 concentration condition.

Key words: Larix olgensis Henry, Physiological ecology characteristics, CO2 response, Clone selection