绿化的好坏,直接关系到一个城市的面貌和环境质量。没有街道绿化的城市,车辆在车道上急驶,行人在烈日下奔走,这样的城市无论建筑多么宏伟,路面怎样宽阔,也难给人好的印象。但绿化不是目的,而是美化城市的手段。随着社会的发展,在人们的物质生活已达一定水平的今天,城市规划理论中 Greening is good or bad, is directly related to the appearance of a city and the quality of the environment. Without the green streets of cities, vehicles are driving fast in the driveway and pedestrians are walking in the scorching sun. No matter how magnificent buildings and pavements are, such cities are hardly able to give a good impression. But greening is not an end but a means to beautify the city. With the development of society, people’s material life has reached a certain level today, urban planning theory