Abstract: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 diffe...