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林业科学 ›› 2014, Vol. 50 ›› Issue (9): 173-179.doi: 10.11707/j.1001-7488.20140924

• 研究简报 • 上一篇    下一篇

3种沙地植物光合碳同化对环境因子的生理响应

宁虎森1, 罗青红1 3, 吉小敏1, 朱雅娟2, 孙慧瑛1, 褚玲1   

  1. 1. 新疆林业科学院造林治沙研究所 乌鲁木齐 830063;
    2. 中国林业科学研究院荒漠化研究所 北京 100091;
    3. 中国科学院新疆生态与地理研究所乌鲁木齐830011
  • 收稿日期:2014-02-17 修回日期:2014-07-30 出版日期:2014-09-25 发布日期:2014-09-30
  • 基金资助:

    “十二五”农村领域国家科技计划课题(2012BAD16B0305),(2012BAD16B0102)。

Physiological Responses of the Photosynthetic Carbon Assimilation to Environmental Factors in three Sandy Plants

Ning Husen1, Luo Qinghong1 3, Ji Xiaomin1, Zhu Yajuan2, Sun Huiying1, Zhu Ling1   

  1. 1. Institute of Afforestation and Sand Control, Xinjiang Academy of Forestry Science Urumqi 830063;
    2. Institute of Desertification, CAF 100091;
    3. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences Urumqi 830063
  • Received:2014-02-17 Revised:2014-07-30 Online:2014-09-25 Published:2014-09-30

关键词: 响应曲线, 光合碳同化, 气象因子

Abstract:

Physiological responses of the photosynthetic carbon assimilation of one-Year-old seedlings of three sandy plant species to environmental factors were studied. The results showed that (1) the variation in photosynthetic characteristics among the sandy plant species was larger in high light and high CO2 concentration than those in low light (0-400 μmol ·m-2 ·s-1) and CO2 concentration (0-200 μmol ·mol-1). The response curves of photosynthetic rate of Atraphaxis bracteata to light intensity, CO2 concentration, temperature, and relative humidity were all located in the upper position to Morus alba and Apoceynum venetum in both July and September. (2) Photosynthetic parameters were significantly different between July and September in each species, with A. bracteata and M. alba having stronger photosynthetic capacity in July whereas A. venetum having stronger photosynthetic capacity in September.(3) A. bracteata was adapted to higher light intensity, CO2 concentrations and temperature, showing to some degree characteristics of sun plants. M. alba was sensitive to temperature and was adapted to shade environments. A. venetum had weak ability to adapt to high light and low CO2 assimilation, but had a longer duration of CO2 assimilation during growing seasons.

Key words: response curve, photosynthetic carbon assimilation, ecological factor

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