森林冠层结构与光环境及其对林下植被生长和格局的影响

摘要

回顾了前人对冠层结构和冠层光环境的描述，完善了冠层结构的定义并阐述了其生态学意义，剖析冠层结构对林下自然光照强度和分布的影响，综合了森林冠层结构和光环境对林内小气候特征及其与空气、土壤等其它环境因子之间相互关系的研究成果，概述了森林生态系统林下植被对光环境的响应。在已有的研究结果中总结光环境对森林生态系统中种子萌发、幼苗生长和林下植被分布格局的影响，以供国内同行参考。%Reviewing the description of the canopy structure and canopy light environment of predecessors,optimize the definition of canopy structure and expounds its ecological significance.Analyze the effect of canopy structure on the light intensity and distribution in the understory layer.Combining the research results of the forest canopy structure and light environment on the forest microclimate characteristics and with the air , soil and other environmental factors of the mutual relationship,summarized the understory vegetation of forest ecosystem for the response of light environment.Tries to summarize the effects of light environment on understory vegetation distribution,the germination of seeds and the growth of seedlings in forest ecosystem,with the aim of providing information for same research.