<h1><br /><img alt="北京街头一名女学生戴着口罩走过（19/12/2015）" src="http://ichef.bbci.co.uk/news/ws/660/amz/worldservice/live/assets/images/2016/02/21/160221055215_cn_beijing_smog_mask_976x549_reuters_nocredit.jpg" width="976" height="549" style="font-family: inherit; font-size: 14px; font-style: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; color: #bdbdbd; margin: 0px; padding: 0px; vertical-align: baseline; height: auto; max-width: 100%; -webkit-user-select: none; width: 645.781px; display: block; background-color: #111111;" /></h1><div property="articleBody" style="border: 0px; color: #404040; font-family: Helvetica, Arial, STHeiti, 华文黑体, \’Microsoft YaHei\’, 微软雅黑, SimSun, 宋体, \’WenQuanYi Micro Hei\’, sans-serif; font-size: 14px; line-height: 14.5455px; margin: 0px 53.7642px 0px auto; padding: 0px; vertical-align: baseline; background-color: #ffffff;"><figure style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 32px -54.2188px 0px 0px; padding: 0px; vertical-align: baseline; clear: both; background-color: #111111;"><span style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline; display: block; position: relative;"><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image copyright</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.5625rem; font-weight: inherit; letter-spacing: 0.25px; line-height: 1; margin: 0px; padding: 3px 8px 1px; vertical-align: baseline; bottom: 0px; position: absolute; right: 0px; background: rgba(0, 0, 0, 0.6);">Reuters</span></span><figcaption style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 16px; vertical-align: baseline; visibility: visible;"><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image caption</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.75rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.33333; margin: 0px; padding: 0px; vertical-align: baseline; display: block;">北京近期饱受雾霾问题困扰。</span></figcaption></figure><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: bold; letter-spacing: inherit; line-height: 1.5; margin-top: 28px; padding: 0px; vertical-align: baseline;">官方媒体报道，北京市出台通风廊道规划，试图以此应对中国首都雾霾问题，实现“风吹霾散”。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">新华社引述北京市规划委员会消息说，有关计划将涉及建设“五条宽度500米以上的一级通风廊道”和“多条宽度达到80米以上的二级通风廊道”。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">北京大气污染问题一直为人诟病，去年12月初还首次发布最高级别的空气重污染红色预警，雾霾天气下广泛学校停课，民众上班受影响。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">不过，“吹霾”计划的消息星期天（2月21日）在社交媒体上传开后，旋即引来不少网民的负面评价。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">河北邯郸微博用户“千寻千寻1997”说：“你们打算吹到哪儿？北京人怕雾霾，别的地儿的人就不怕？”</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">北京丰台区网民“慢慢慢的要死啦”说：“大兴丰台准备接霾吧。”</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">用户“喜欢在下雨天睡懒觉”说：“把北京的霾吹到河北就OK了？河北供了北京的水，供了北京的钱，供了北京的人才，北京不光没扶持河北，现在还要把霾吹到河北，北京人生来比河北人金贵吗？”</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">也有少数网民认为此举会带来实效。天津的“五度空间skinner”说：“热岛效应确实该治理了，加大城区地表风速的话应该会起到一定作用的。”</p><h2>五线通风</h2><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">新华社引述北京市规划委副主任王飞说，五条“一级”通风廊道将分别聚焦于改善北京西北部、西部、中心城区沿中轴线地区、中心城东部酒仙桥至中央商业区沿线，以及中心城东部地区的通风功能。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">王飞称，北京市此举旨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。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">据新华社介绍，这五条通告均是从北向南架设。报道说，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——且一般沿着风的方向伸展。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">北京市官员称，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。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">王飞表示，划入通风廊道的区域将严格控制建设规模，并在有条件的情况下打通阻碍廊道连通的关键节点。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">不过，报道并未提及有关规划的具体进程和建设进度，以及当局在打通廊道障碍的过程中会否拆除任何设施。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">去年年底，中国国家发展和改革委员会与环境保护部发布《京津冀协同发展生态环境保护规划》，定出到2020年，京津冀地区PM2.5污染物浓度要比2013年下降40%左右的指标。</p><p style="border: 0px; font-style: inherit; font-family: inherit; font-size: 1rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.5; margin-top: 18px; padding: 0px; vertical-align: baseline;">新华社上月报道称，北京计划在今年内关闭2500家小型污染企业，希望有助降低污染。</p></div>