加拿大28开奖官网

中新社北京分社正文

区域传输已成一季度北京市PM2.5升高的主要原因

2020年03月25日 16:30 来源:加拿大28开奖官网_加拿大28软件_信誉无忧

加拿大28开奖官网  zhongxinwangbeijingxinwen3yue25ridian (chenhang)beijingshihuanjingbaohujiancezhongxinzhurenliubaoxianzhichu,zuijinbeijingshifashengyicimingxiandekongqiwuranguocheng。benciwuranguochengquyuchuanshugongxianjin70%,zhuyaolaizitangshan、langfangdengdongnanbuyidai。

加拿大28开奖官网  jinnian1dao2yuefen,beijingshisixiangzhuyaowuranwutongbi“sanjiangyisheng”,xikeliwu(pm2.5)pingjunnongduwei61weike/lifangmi,tongbishangsheng15.1%;yucitongshi,eryanghualiu(so2)、eryanghuadan(no2)、kexirukeliwu(pm10)tongbijiangfugaoda37.5%、20.9%、21.5%;jinru3yuefen,kongqizhiliangzhengtijiaohao。

 区域传输贡献近70%

加拿大28开奖官网  liubaoxianjieshao,benciwuranguochengquyuchuanshugongxianjin70%,zhuyaolaizitangshan、langfangdengdongnanbuyidai。congjianceshujulaikan,24rishangwu,beijingshipm2.5nongdurengweichizai1jiyoushuiping;shouquyuchuanshujibuliqixiangtiaojianyingxiang,24rixiawuzaipiannanfengzuoyongxia,pm2.5nongdukuaisushenggao,19shidadao3jiqingduwuran,yejianwuranjinyibushangsheng,25ri03shidadao4jizhongduwuranjibie,08shidadao5jizhongduwuranshuiping,qijian,beijingshidongnanbujiaozhong,xibeibujiaoqing。

  congpm2.5yuanjiexijieguolaikan,benciwuranguochengzhuyaoshoudongnanquyuchuanshuyingxiang。qizhong,beijingshibendigongxianzhan33%,quyuchuanshugongxian67%,quyuchuanshuzhongdongnanchuanshugongxian42%,xinanchuanshugongxian8%;duibeijingquyuchuanshugongxianzuidadechengshihediqufenbieshi: tangshan(13%),shandong(11%)、langfang(8%)、tianjin(7%)。

  zongtilaikan,benciwuranguochengyidongnanchuanshuweizhu,xinanchuanshuhegaoshixiajileigongxianweifu。

加拿大28开奖官网  tongsudelaishuo,shoukuosantiaojianbuliyingxiang,beijingshishangkongjiuxianggailechuangdamianbei,wuranwubei“wuzhu”le,kuosankongjianbeiyasuole;tongshiquyuchuanshuyingxiangda,waimiandaliangdewuranwuwangbeijingdengyidaihuiju,zaochenglebenciwuranguocheng。

两次空气重污染过程导致北京PM2.5反弹

  1dao2yueliangcimingxiandekongqizhongwuranguochengshipm2.5fandandeyuanyin,yicihebaodingdengyidaideyanhuaranfangyouguan,yicihedongbutangshandengyidaideranmeijigongyepaifangyouguan。

  jinnian1dao2yue,beijingshizhuyaosixiangwuranwunongdutongbichuxian“sanjiangyisheng”,qizhongyuzhijieyicipaifangxiangguandeso2、no2hepm10tongbijiangfuzai20%yishang,eryijianjieercifanyingshengchengweizhudepm2.5tongbifandan15.1%;pm2.5zuoweixikeliwugengrongyizaikongqizhongxuanfu、cunliujiaozhangshijian,yincijuyoujiaoqiangdezhangjulichuanshutexing。

加拿大28开奖官网  genjuqinghuadaxuedecmaq-isamshuzhimoxingcesuan,jinnian1dao2yuewailaichuanshuduibeijingshipm2.5gongxianbilvdadao50%,yuanchaowangnian30%zuoyoudenianjunshuiping。zaichunjieheyuanxiaojiehoudeliangcizhongwuranguochengzhong,wailaichuanshugengshidadao58%zhi61%zhijian,qizhongchunjieqijian1yue24ridao27rizhongwuranguochengzhuyaoyibaodingdengyidaiyanhuabaozhuranfangwuranchuanshuweizhu;yuanxiaojiehou2yue9ridao13rizhongwuranguochengzhuyaolaiyuanshidongbutangshandengyidaideranmeihegongyepaifang。zhongwuran“yiyidangshi”,duipm2.5nongdugongxiantuchu,ruokouchuzheiliangcizhongwuranyingxiang,1dao2yueleijinongdu43weike/lifangmi,tongbixiajiang27%。

遇不利气象条件易形成重污染

  liubaoxiantidao,benzhihaishiquyupaifangrengjiaoda,zaiduanqijiduanbuliqixiangtiaojianxiarenghuixingchengkongqizhongwuran。jinnianchunjieyilai,shouyiqingyingxiang,beijingquanshiwuranwupaifangzongliangdafuxiajiang,danzongtilaikan,beijingjiangdeduo,quyujiangdeshao、chengshijiangdeduo,nongcunjiangdeshao、shenghuoyuanjiangdeduo,gongyeyuanjiangdeshao,zaidangqianhuabeicainuanjidedabeijingxia,yubuliqixiangtiaojian,quyudewuranwuhuijudaojubuchengshi,renghuixingchengzhongwuranguocheng。

  suiranbeijingwuranpaifangjiangfujiaoda,danjinzhanquyu“2+26”chengshipaifangzongliangde1-6%。suiranchengshiyidongyuan、shenghuomianyuandengxiajiangfudujiaoda,danquyunongcunsanmeideranshaoyousuofandan,juguojiadaqiwuranfangzhigongguanlianhezhongxintongji,chunjieqijianjingjinjijizhoubiandiquminyongsanmeixiaohaoliangjiaojieqianzengzhangleyue30%—40%。tongshi,jushengtaihuanjingbutongji,quyu“2+26”chengshizhandatoudegongyewuranpaifangweiyoushizhixingxiajiang,nox、so2paifangliangrengweichizaizongliangde70%yishang。ciwai,jieganfenshaoqingkuangyoumingxianzengjia,2yuefenhuabeiliushengshiyaoganjiancedaoshengwuzhiranshaohuodiangeshu2737ge,xiangbi1yuezengjia2bei。

加拿大28开奖官网  quyuzhengtibaochizhejiaogaodewuranpaifangshuiping,yucitongshi,huanjingrongliangzhengtixiajiangchaosancheng。zhuyaotixianzaiyishichunjiehouwenduyichanggao,niwenpinlvzengda;ershibeifengshaonanfengduo,wuranwuyizaibeijingdengshanqianyidaihuiju;sanshishiduda,paifangdewuranwugengrongyizhuanhuaweilijingjiaoxidepm2.5。zainiwengaoshijingwendebuliqixiangtiaojianxia,wailaiwuranchuanshudiejiajudiwuranjileizaochengbeijingshipm2.5dewuran。

  刘保献表示,由此可见,随着北京市PM2.5浓度不断的降低,区域传输的影响越来越大,北京市空气质量的改善越来越依赖区域的共同减排,特别是对于区域的燃煤及工业等排放的PM2.5前体物管控尤为重要。因此,持续加强区域协同减排,共同改善区域空气质量是当前和未来一段时间空气质量改善的关键。​​​(完)

编辑:陈建

中国新闻社北京分社版权所有:加拿大28开奖官网_加拿大28软件_信誉无忧 主办单位:加拿大28开奖官网_加拿大28软件_信誉无忧加拿大28开奖官网 信箱: beijing@notationnation.com.cn  技术支持:中国新闻社网络中心

加拿大28开奖官网_加拿大28软件_信誉无忧 加拿大28开奖官网_加拿大28app官网下载|信誉无忧 加拿大28开奖官网_加拿大28app官网下载|信誉首选 加拿大28开奖官网_加拿大28app官网下载_购彩平台 加拿大28开奖官网_加拿大28app官网下载-信誉首选 加拿大28开奖官网_加拿大28app官网下载|官方网址 加拿大28开奖官网_加拿大28预测_购彩平台 加拿大28开奖官网_加拿大28app官网下载-购彩平台 加拿大28开奖官网_加拿大28app官网下载-信誉无忧 加拿大28开奖官网_加拿大28app官网下载-官方网址 加拿大28开奖官网_加拿大28app官网下载_信誉无忧