不同附生植物种类光合生理生态特性的研究

研究了不同遮光处理对附生植物肾蕨、圆盖阴石蕨、麒麟尾光合生理特性的影响。结果表明，3种附生植物的气孔导度随净光合速率的降低表现出升高的趋势：3种附生植物均表现为净光合速率与胞间CO2浓度呈负相关，而与气孔导度呈正相关：仅有圆盖阴石蕨表现出高光光抑制的现象，而肾蕨和麒麟尾则表现出对高光的良好适应能力；3种附生植物对光适应的生态幅均较窄，表现出阴生植物的特性，而且光补偿点普遍较低，呈现对弱光较强的利用能力。相比而言，麒麟尾对光适应的生态幅更窄，肾蕨和圆盖阴石蕨对光适应的生态幅较宽，有利于其生长、繁殖扩散，进而在群落中取得优势地位。

Study on Ecological and Photosynthetic Physiological Characteristics of Different Epiphyte Species.

The study of photosynthetic physiological characteristics about Nephrolepis auriculata,Humata tyermanni and Epipremnum under different shading showed that the Ci presented the trend of ascendant with the decreasing of the net photosynthetic ratio.There exist negative correlation between net photosynthetic ratio and the concentration of CO2,and positive correlation between net photosynthetic ratio and Ci.The net photosynthesis ratio of Humata tyermanni was restrained under strong illumination.By contrast,the...