草地学报

›› 2001, Vol. 9 ›› Issue (2): 143-147,153.DOI: 10.11733/j.issn.1007-0435.2001.02.013

• 研究论文 • 上一篇    下一篇

吉兰泰地区退化梭梭光合生态生理学特性

韩永伟1, 姚云峰2, 韩建国1, 杨永生3, 张汝民2   

  1. 1. 中国农业大学草地研究所, 北京, 100094;
    2. 内蒙古农业大学, 呼和浩特, 010019;
    3. 山东沂水水土保持局, 沂水, 276400
  • 收稿日期:2000-11-02 修回日期:2001-03-15 出版日期:2001-05-15 发布日期:2001-05-15
  • 作者简介:韩永伟(1973- ),男,硕士毕业于内蒙古农业大学,现为中国农业大学草地所博士研究生
  • 基金资助:
    国家自然科学基金项目(3950068)资助.

Study on the Photosynthetic Eco-physiological Characteristics of Degenerated Haloxylon Ammodendron in Jilantai

HAN Yong-wei1, YAO Yun-feng2, HANG Jian-guo1, YANG Yong-sheng3, ZHANG Ru-min 2   

  1. 1. Grassland Institute,China Agricultural University,Beijing 100094 China;
    2. Inner Mongolia Agricultural University, Hohhot 010019 China;
    3. Soil and Water Conservation Bureau, Yishui 276400 China
  • Received:2000-11-02 Revised:2001-03-15 Online:2001-05-15 Published:2001-05-15

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摘要： 研究吉兰泰地区退化梭梭光合生态生理.结果表明,退化梭梭的光合能力、光合水分利用率、光饱和点均小于对照梭梭(生长正常);与后者比较,退化梭梭对相对湿度的变化表现敏感,而对CO2浓度变化的反应不十分敏感,且抵御高温胁迫的能力较差.通径分析结果表明,对退化梭梭净光合速率影响最大的生境因子是土壤含盐量.

关键词: 梭梭, 光合, 生态生理

Abstract: On the basis of studying on photosynthetic eco physiological characteristics of Haloxylon ammodendron, the paper points out:the photosynthetic capacity、photosynthetic water utilization ration、light compensation point of degenerated H.ammodendron are all smaller than the control.Degenerated H.ammodendron is sensitive to humidity changes but not to CO2 concentration changes and the ability to resist high temperature is lower.The result of path coefficient analysis is that the factor affect net photosynthetic rate of H.ammodendron mostly is soil salt contents.

Key words: Haloxylon ammodendron, Photosynthesis, Eco physiology

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