城市中的花草树木不仅美化着环境,被誉为城市的“美神”,而且对于改善城镇小气候、消除工业污染、清洁空气、防风避沙以及减弱和防止噪音等,都有其独特的意义,因此又素有“绿色卫士”之称,城市绿化指数已经成为衡量城市现代的重要指标。近年来,我省各大、中、小城市都十分重视 The flowers and trees in the city not only beautify the environment, but are also known as the “beauty gods” of the city. They also have unique meanings for improving the urban microclimate, eliminating industrial pollution, cleaning the air, preventing wind and sand, and reducing and preventing noise. It is also known as the “Green Guardian”. The urban greening index has become an important indicator of the modern city. In recent years, major, medium, and small cities in our province have attached great importance