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生态学杂志 ›› 2003, Vol. ›› Issue (1): 26-30.

• 博士论坛 • 上一篇    下一篇

不同尺度上植物叶气孔导度对升高CO2的响应

郑凤英1, 彭少麟2   

  1. 1. 山东大学威海分校海洋生物工程系, 威海264209;
    2. 中国科学院华南植物研究所, 广州510650
  • 收稿日期:2001-02-05 修回日期:2001-04-04 出版日期:2003-01-10
  • 基金资助:
    国家自然科学基金重大项目(39899370);广东省自然科学基金重大项目(980952);中国科学院重大资助项目(KZ951-B1-110)。

Responses of plant stomatal conductance to elevated CO2 at different scales

ZHENG Fengying1, PENG Shaolin 2   

  1. 1.Department of Marine Biology, Shandong University at Weihai, Weihai 214209, China;
    2. South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650, China
  • Received:2001-02-05 Revised:2001-04-04 Online:2003-01-10

摘要: 植物叶气孔导度对大气CO2浓度升高的响应可表现在以下几个层面:在叶水平上,叶气孔导度和气孔密度下降;在植物个体水平上,单位叶面积蒸腾下降,植株的水分利用率升高;在生态系统水平上,蒸散降低,土壤泾流和土壤水分含量增加;在全球尺度上,扩大了温室气体的增温效应,同时也降低了全球降雨量增加的趋势。正是因为植物叶气孔导度的变化会影响全球水循环,所以它在全球变化中起着非常重要的作用。但目前的研究结果还不能外推到更大的尺度上去.

关键词: 营养源, 稻虱缨小蜂, 寿命, 寄生能力, 存活率

Abstract: Stomatal responses of plant to elevated CO2 are as follwing:from the plant to global scale,decreased stomatal conductance and density at leaf scale;reduced transpiration per unit leaf area and increased water use efficiency at plant scale;decreased evapotranspiration and elevated run off and soil moisture at ecosystem scale;and amplifying the greenhouse gas effect in increasing temperature,but inhibiting the increasing precipitation at global scale.It plays an important role in global changes by effecting the water cycle.But the current result of research at small scales cannot been scaled up directly to large ones.

Key words: Nutritional resource, Anagrus nilaparvatae, Longevity, Parasitic ability, Survival rate

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