城市绿化特别是道路绿化作为“三级城市”重要的基础设施,具有美化街景、净化空气、减弱噪音、减尘、改善小气候、防风、防火等作用。又好又快推动道路绿化建设有利于改善城市景观,全面提升县城的精神内涵。城市绿化是个硬指标,随着城市建设规模的逐步扩大,陕西省陇县县城人口和汽车尾气与日俱 Urban greening, especially road greening, is an important infrastructure of “tertiary city” with the functions of beautifying streetscape, purifying air, reducing noise, reducing dust, improving microclimate, preventing wind and fire. Good and fast to promote the greening of the road is conducive to improving the urban landscape, and comprehensively enhance the spiritual connotation of the county. Urban greening is a hard indicator, with the gradual expansion of urban construction scale, Shaanxi Longxian county population and vehicle exhaust daily