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植物研究 ›› 1996, Vol. 16 ›› Issue (4): 477-484.

• 论文 • 上一篇    下一篇

星星草光合蒸腾日变化与气候因子的关系

阎秀峰1, 孙国荣2, 肖玮2   

  1. 1. 150040 哈尔滨, 东北林业大学森林植物生态学开放研究实验室;
    2. 150080 哈尔滨, 哈尔滨师范大学生物系
  • 收稿日期:1996-08-01 出版日期:1996-12-15 发布日期:2016-06-14
  • 基金资助:
    黑龙江省自然科学基金资助项目。

THE RELATIONSHIPS BETWEEN DIURNAL CHANGES OF PHOTOSYNTHESIS AND TRANSPIRATION OF PUCCINELLIA TENUIFLORA AND THE CLIMATE FACTORS

Yan Xiu-feng1, Sun Guo-rong2, Xiao wei2   

  1. 1. Open Research Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040;
    2. Department of Biology, Harbin Normal University, Harbin 150080
  • Received:1996-08-01 Online:1996-12-15 Published:2016-06-14

摘要: 在测定天然星星草和人工种植生长一至三年星星草抽穗期的光合蒸腾特性日变化的同时,测定了光强、气温、地温、CO2浓度和相对湿度等气候因子的日变化,并采用相关系数和通径系数分析方法分析了星星草光合蒸腾特性日变化与这些气候因子的关系。对抽穗期星星草光合蒸腾特性即光合速率、蒸腾速率和水分利用效率日变化直接影响最大的是空气的相对湿度,其次是地表温度和CO2浓度,光强和气温主要是通过影响空气的相对湿度而间接影响星星草光合蒸腾特性的日变化。

关键词: 星星草, 光合蒸腾特性, 日变化, 气候因子

Abstract: The diurnal chang es of photosynthesis and transpiration of bo th natural and planted one to three years Puccinellia tenuiflora at heading stage, climate factors such as light in-tensity, atmospheric temperature, ground temperature, CO2? concentration and relative humidity are measured.The relationships between diurnal changes of photosynthesis and transpiration of P.tenuiflora and the climate factors are analysed by correlation coefficient and path coefficient analysis.The relative humidity of atmosphere affects the diurnal changes of the photosynthesis and transpiration characters suth as photosynthesis rate, transpiration rate and water use efficiency of P.tenuiflora at heading stage most, follow ed by the ground temperature and CO2? concentration.The light intensity and atmospheric temperature influence the diurnal changes of photosynthesis and transpiration characters indirectly by acting on the relative humidity of atmosphere.

Key words: Puccinellia tenuiflora, photosynthesis and transpiration character, diurnal change, climate factors