江西农业大学学报Issue(2)：218-224,7.DOI:10.13836/j.jjau.2015033
滇西北不同海拔梯度下急尖长苞冷杉叶片的生态解剖结构特性研究
An Eco-anatomical Study on Abies georgei var. smithii Leaves at Gradient Elevation in Northwest of Yunnan
摘要
Abstract
To study the ecological adaptation of Abies georgei var.Smithii leaves at different gradient eleva⁃tions,the leaf anatomical characteristics of Abies georgei var. Smithii and their relationship with ecological fac⁃tors were investigated,which are growing at different elevations ( 3 100 m,3 250 m,3 400 m,3 550 m,3 700 m) in the Nature Reserve of Yulong Snow Mountain.The results showed that:at the altitude below 3 550 m,the strata corneum epidermidis thickness,upper epidermis thickness,palisade mesophyll thickness,spongy meso⁃phyll thickness,length and width of palisade cell,palisade tissue ratio,palisade cell factor,phloem thickness, xylem thickness and the transfusion tissue thickness increased with the increasing elevation. However,the pa⁃rameters of leaf anatomical characteristics decreased at the elevation above 3 550 m. Hence, the optimum zone for Abies georgei var.Smithii was nearly at the elevation of around 3 550 m.On one hand,the growth and distribution of Abies georgei var.Smithii are limited by the changes of complex environmental conditions along with different altitudes,which resulted in the differences of the leaf anatomical characteristics of Abies georgei var.Smithii.On the other hand,these differences of the plant could lead to a good adaptation to the environment changes in a certain degree.关键词
急尖长苞冷杉/叶片解剖/海拔梯度/滇西北Key words
Abies georgei var.Smithii/leaf eco-anatomical/elevation gradient/Northwest of Yunnan分类
农业科技引用本文复制引用
唐探,姜永雷,冯程程,程小毛,黄晓霞..滇西北不同海拔梯度下急尖长苞冷杉叶片的生态解剖结构特性研究[J].江西农业大学学报,2015,(2):218-224,7.基金项目
国家自然科学青年基金项目（31100292）和云南省省级重点学科园林植物与观赏园艺建设经费项目 （）
