扬州古运河风光带绿地树种配置分析

Species Composition of the Scenic Green Area of the Grand Canal in Yangzhou

扬州古运河城区段大水湾——便益门桥的绿地树种调查表明,共88种,分属43科、67属。乡土树种与外来树种比为1.44:1,常绿类树种与落叶类树种比为0.63:1,乔木与灌木比为1.5:1;观花树种42种,花期主要分布在3～7月。论文对绿地模式的功能定位、模式结构、树种配置等作了论述,并对进一步的绿地树种规划和完善提出对策和建议,以更有利于绿地生态效益、环保功能及保健功能的表达。

Species composition of the trees growing along the Grand Canal from Dashuiwan to Bianyimen in Yangzhou was investigated. The investigation found a total number of 88 tree species, belonging to 67 genera of 43 families. The ratios of local species to alien species, evergreen species to deciduous species and arbor species to shrub species were respectively 1.44：1, 0.63：1, 1.4：1. There were 42 flower species of which flowering period mainly distributed from March to July. The functions, structure and species composition of the green area were discussed in the paper, strategies and suggestions on future improvement of the species composition were proposed to achieve ecologic benefit and functions for environment protection and health care.