要改善城市生态环境,非常重要的一条就是提高城市绿化率。不过,目前我国许多城市的绿化普遍遭遇的一大难题就是,城区建筑物密集、可绿化地面面积严重缺乏。在这种情况下,天台绿化日渐引起人们的关注和重视。天台绿化可以广泛地理解为在各类建筑物、构筑物、城围、桥梁(立交桥)等的露台、天台、阳台或大型 To improve the urban ecological environment, a very important one is to increase the rate of urban greening. However, one of the major problems commonly encountered in the afforestation of many cities in our country at present is that there is a serious shortage of greenery in urban areas due to the dense buildings. Under such circumstances, roof greening has aroused people’s attention and attention. Rooftop greening can be broadly understood as a terrace, rooftop, balcony or large-scale building in various types of buildings, structures, Shing Wai, bridges (overpasses)