北京山区落叶阔叶林优势种叶片特点及其生理生态特性

荆条、山杏、辽东栎、北京丁香、大叶白蜡、核桃楸等６种植物在不同光照条件下的气孔导度，不同生境下叶片形态参数和叶片解剖特征进行了研究。扫描电子显微镜图片显示这片植物的气孔全着生在远轴面，气孔密度大小是：辽东栎〉山杏〉北京丁香〉核桃楸〉大叶白蜡，方差分析结果显示这５种植物叶片上气孔密度存在极显著差异，且叶片外表微观上差异比较明显。生境不仅影响叶片的气孔密度，而且也导气孔导度的差异，全光照条件下，山杏、

The relationship between the ecophysiological feature and leaf characteristics of some woody plants in Beijing mountain zone

Six woody plant species from Beijing mountain zone were surveyed for the foliar stomatal conductance under different light conditions,guard cell length,open stomatal apertures,and surface characteristics with scanning electron microscopy.All plant's stomata are distributed on the abaxial of leaves.The stomata density is Quercus liaotungensis>Prunus armeniaca var. ansu > Syringa pekingensis > Juglans mandshurica > Fraxinus rhychophlla .Statistics analysis result showed that there is a great difference among them.And their foliar surface have difference in microfeatures. Same plant,under different habits,has different stomatal density and conductance.Under sunshine, Prunus armeniaca var .ansu,Vitex negundo var. Rhynchgensis and Syringa pekingensis have the lowest stomatal conductance,then, Quercus liaotungensis and Fraxinus rhychophlla follow, and Juglans mandshurica has the highest.Under shade conditions, Fraxinus rhychophlla, Syringa pekingensis and Juglans mandshurica have relatively high stomatal conductance,especially at noon.