桂林岩溶石山光蜡树响应曲线的研究  

Study of Response Curve about Fraxinus griffithii on Karst Hills in Guilin

作　　者：杨红兰[1] 梁士楚[2] 黄雅丽[2] 田华丽[2] 

机构地区：[1]广西民族师范学院,广西崇左532200 [2]广西师范大学生命科学学院,广西桂林541004

出　　处：《安徽农业科学》2012年第34期16505-16506,16512,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(30660036);国家重点基础研究发展计划项目(2006CB403207)

摘　　要：[目的]为掌握光蜡树生理生态性。[方法]采用LI-6400型便携式光合仪,对光蜡树群落中光蜡树的响应曲线进行了研究。[结果]光蜡树在8月具有较高的光饱和点和较低的光补偿点,有利于光蜡树对岩溶石山环境的适应;11月光蜡树的光饱和点降低而光补偿点升高。光蜡树8月份的羧化效率为0.04,11月的较低仅为0.01。[结论]光蜡树对弱光环境具有一定的适应机制,且它对弱光的利用能力强。[ Objective] The research aimed to discover the physioeeo]ogy of Fraxinus griffithii. [ Method ] The response curve of Fraxinus griffithii in Fraxinus griffithii community was measured using LI-6400 photosynthesis system （LI-COR. USA）. [ Result] In August the light saturation point of F. griJfithii was high and light compensation point was low, which was favorable of F. griffithii adapting to the environment in karst hills. In November, the light saturation point decreased while the light compensation point increased. In August carboxylase efficiency of F. grifithii was 0.04, and that in November was lower, which was only 0.01. [ Conclusion] F. grlffithii had some adaptation mechanism to low light environment and it had strong utilization availability of weak light.

关 键 词：光蜡树 岩溶石山 响应曲线 生理生态 

分 类 号：S781.45[农业科学—木材科学与技术]