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北京将打开5条通风廊道 向城市送风吹雾霾

2016-02-20 21:08:06    央视

为了让徐徐清风能吹进城市,不被高楼大厦组成的“围墙”阻挡在外围,北京市计划打开5条宽度500米以上的一级通风廊道,并形成10多条宽度达到80米以上的二级通风廊道,形成一套完整的通风廊道网络系统。北京市规划委19日发布了这一信息。

5条廊道处处见绿见公园

北京市规划委副主任王飞说,北京市正在利用通风潜力较大地带,完善中心城区通风廊道系统,以提升建成区整体空气流通性,其中,5条宽度500米以上通风廊道被定位为“一级”。记者发现,这5条廊道串起了本市多座公园和大面积绿地。

其中,即将改善西北部通风环境的第一条廊道,将从植物园开始,至昆明湖,经昆玉河,穿紫竹院公园、动物园一线,最终抵达玉渊潭。

改善西部通风环境的第二条廊道,也是从植物园起,经西五环及两侧绿化带一路向南。

改善中心城区沿中轴线地区通风环境要靠第三条廊道。这条廊道的起始点在太平郊野公园,然后经东小口森林公园、奥林匹克公园一路向南,顺着北中轴线抵 达后 海、北海、中南海区域,再蓄力向南至天坛公园,到龙潭公园后仍不停歇,还将顺着京沪高速及两侧绿化带继续向城南输送清风。

中心城东部地区,尤其是酒仙桥到CBD区域的通风环境,要靠第四条廊道来改善。这条廊道始于清河郊野公园,先后经过朝来森林公园、太阳宫公园、朝阳公园,然后顺着东北五环的绿地一路抵达东南五环,再沿京沪高速及两侧绿化带“顺流而下”。

中心城东部地区通风环境的改善,还有第五条廊道的支持。这条廊道主要依托京密高速到东五环及两侧绿化带一线,为东部地区输送新风。

通风廊道内难盖“大高楼”

为什么要打通这些通风廊道?记者了解到,通风廊道一般是以大型空旷地带连成,例如主要道路、相连的公园绿地、建筑线后移地带及低矮楼宇群,通风廊道一般沿着风的方向伸展。在很多研究中,通风廊道被视为缓解城市“热岛效应”、吹散雾霾的方法之一。

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