第三,大面积适地适树种植,裁大树,植树成林。在市区建设大面积草坪之风,必须得刹一刹了。从景观效果看,草坪确实能给人通透开阔、豁亮的感觉,特别是狭小的地方,用草坪比植浓厚的树林减少对人的压抑感。城市中心区的小广场绿地等更是疏林草地为佳。但如果连二环路以外的立交桥桥区绿化、公路绿化都是草坪为主,就欠妥了。设想,立交桥桥区如建成一片片不同树种的树林,让车子穿梭于林间,那乘车人该是何等爽快呀!所以说,在城中心区适当点缀、城外大量营建浓郁、厚重的树林,是环境美和生态效益最佳组合的做法。乘飞机俯视北京城,只有天坛、北海、正义路等大树成林的地方,才有绿化的气势,才减少了城市水泥灰 Third, suitable for large-area tree planting, cutting big trees, planting trees. In the urban area to build a large area of ​​lawn wind, you have to brake. From the landscape effect, the lawn can really give people a transparent, bright feeling, especially in small places, with lawns than thick trees planted to reduce the pressure on people. Small square in the city center green space is more sparse grassland is better. However, if the Second Ring Road outside the overpass bridge greening, greening roads are mainly lawn, it is defective. Imagine overpass Bridge District, such as the completion of a piece of woods of different species, so that the car shuttle in the woods, the riders that is how refreshing it! So, in the city proper embellishment, the city built a large number of thick, heavy woods , Is the best combination of environmental beauty and ecological benefits. By plane overlooking the city of Beijing, only the Temple of Heaven, the North Sea, justice and other trees in the forest, only green momentum, it reduces the urban cement gray