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城市道路绿化植物的选择,主要考虑艺术效果和功能效果。乔木在街道绿化中,主要作为行道树,作用主要是夏季为行人遮荫、美化街景;灌木多应用于分车带或人行道绿带(车行道的边缘与建筑红线之间的绿化带),可遮挡视线、减弱噪声等;目前,北方大多数城市主要选择冷季型草坪作为地被植物,根据气候、温度、湿度、土壤等条件选择适宜的草坪草种是至关重要的;另外多种低矮花灌木均可作地被应用,如棣棠等;一般露地花卉以宿根花卉为主,与乔灌草巧妙搭配,合理配置:一、二年生草本花卉只在重点部位点缀,不宜多用。城市干道具有实现交通、组织街景、改善小气候的三大功能,并以丰富的景观效果、多样的绿地形式和多变的季相色彩影响着城市景观空间和景观视线。城市干道分为一般城市干道、景观游憩型干道、
Urban road greenery choices, the main consideration of artistic effects and functional effects. Trees in the street greening, mainly as a street tree, the main role of summer pedestrian shade, beautify the street; shrubs and more used in the car or sidewalk green belt (greenway between the edge of the roadway and the building red line), Obstruct the line of sight and reduce the noise. At present, most cities in northern China mainly choose cold-season lawns as cover plants. It is very important to select suitable turf grasses according to climate, temperature, humidity and soil conditions. In addition, Short dwarf shrubs can be used to be applied, such as Di Tang; general open-air flowers to perennial flowers, with the arborvitae grass clever collocation, reasonable allocation: a biennial herbaceous flowers embellished only in the key parts should not be used. Urban trunk roads have the functions of traffic, organization of streetscapes and microclimates. They also influence the urban landscape space and landscape with rich landscape effects, diverse forms of green space and ever-changing color of the season. Urban roads are divided into general urban roads, landscape recreational roads,