3种杨树形态特征调查及其在通道绿化中的应用

The Characteristics of the three Kinds of Poplar's Shape and the Utilization of the Trees in the Passage Landscaping

通过对晋中地区毛白杨、新疆杨、北京杨这3种树种实地调查和资料收集,得出:早春时期,重点应从树皮的颜色与粗糙度、皮孔的形状、大小及密集度来鉴别树种。通过对树高、胸径、成活率等的实地测量及内业计算,在树种选择上应优先选择新疆杨和毛白杨。在今后的通道绿化及城市绿化中,可以根据绿化的成本及成效要求灵活选择规格。

This text base on the investigation and collection of the Popuuls tomentosa, Populus？ ？ bolleana Lauche, PopulusX- beijingensis W. Y. Hwang et Liang in Jing Zhong area. The result showed that： in the early spring,it can be distinguished from the aspects of the bark＇s color and its harshness,as well as the hole＇s shape,size and density on the bark. So,it is easy to conclude that Xing Jiang poplar and the white poplar are the preferential choices when choosing the trees by contrasting the tree＇s height and the survival rate of the poplar＇s by measuring the local trees. Besides, people can choose the shape according to the virescencc cost and effect when landscaping the passage or the city.