• <label id="emkmc"></label>
  • <samp id="emkmc"><sup id="emkmc"></sup></samp>
    <xmp id="emkmc">
  • 星韻地理網

     找回密碼
     中文注冊

    QQ登錄

    只需一步,快速開始

    星韻地理網 首頁 地理新聞 查看內容

    中國專家組目前已基本弄清京津冀區域大氣重污染成因

    2019-3-14 11:16| 發布者: 天空之城| 查看: 368| 評論: 0|原作者: 天空之城

     中新社北京3月3日電 (記者 阮煜琳 尹力)通過歷時近兩年的集中聯合攻關,國家大氣污染防治攻關聯合中心專家3日表示,目前已基本弄清了京津冀及周邊地區大氣重污染的成因。遠超環境承載力的污染排放強度,是京津冀及周邊地區大氣重污染形成的主因。

    資料圖:北京市民在重污染天氣下出行。中新社記者 賈天勇 攝

      2017年4月以來,中國開展了大氣重污染成因與治理攻關項目,匯集國內2000多名環境科學、大氣科學、氣象科學以及行業治理等方面的優秀科學家和一線科研工作者,建成了天地空綜合立體觀測網,集中開展聯合攻關,目前已基本弄清了京津冀及周邊地區大氣重污染的成因,實現了對重污染過程的精細化定量化描述。
      重污染主因:遠超環境承載力的污染排放強度
      遠超環境承載力的污染排放強度,是京津冀及周邊地區大氣重污染形成的主因。國家大氣污染防治攻關聯合中心副主任張遠航說,京津冀及周邊地區偏重的產業結構、以煤為主的能源結構、以公路為主的交通結構,導致單位國土面積煤炭消費量是全國平均水平的4倍,鋼鐵、焦炭、玻璃、原料藥等產量均占全國40%以上,大宗物料80%依靠柴油貨車運輸。
      從時間分布上看,受采暖影響,秋冬季一次細顆粒物(PM2.5)和有機碳、黑碳等組分的月均排放水平是非采暖季的1.5至4倍,而保定等散煤用量大的城市,上述污染物在秋冬季的排放水平更高。
      從空間分布上看,區域內污染物排放總量大的城市為唐山、天津、石家莊、邯鄲、淄博。從行業分布來看,鋼鐵及焦化行業主要分布在唐山和晉冀魯豫交界地區,玻璃行業集中在邢臺、淄博等地,石化化工主要集中在淄博、天津、滄州、石家莊等地。在京津冀及周邊地區“2+26”城市PM2.5年均濃度達標(每立方米35微克)約束下,一次PM2.5、氮氧化物(NOx)、揮發性有機物(VOCs)及氨氣(NH3)等污染物排放量仍遠超環境容量。
      重污染形成誘因:不利氣象條件造成污染快速累積
      京津冀及周邊地區位于太行山東側“背風坡”和燕山南側的半封閉地形中,削弱了該地區秋冬季盛行西北季風的作用,“弱風區”特征明顯,污染物擴散條件較差。在當前高強度的污染物排放背景下,一旦出現不利氣象條件,極容易產生本地積累型污染。京津冀及周邊地區各城市污染程度受到整個區域的傳輸影響,全年平均貢獻約為20%至30%。
      二次轉化是京津冀大氣污染積累過程中爆發式增長的動力
      專家表示,PM2.5二次轉化微觀機理十分復雜,硝酸鹽、硫酸鹽、銨鹽和二次有機物等組分快速生成助推了PM2.5爆發式增長。京津冀及周邊地區大氣中NH3的濃度顯著高于美國等發達國家和地區,處于富氨狀態,近年來區域內二氧化硫的濃度不斷下降,大氣中NH3的濃度不降反升,更加有利于硝酸鹽的形成。
      張遠航介紹說,2017年10月至2019年3月初的秋冬季期間,京津冀及周邊地區共出現23次區域重污染過程。對23次污染過程的精細化定量化分析表明,每次污染過程都可以解釋為污染物本地積累、區域傳輸和二次轉化綜合作用的結果。(完)

    最新評論

    QQ|Archiver|小黑屋|手機版|星韻地理網 ( 蘇ICP備16002021號 )

    GMT+8, 2019-7-14 04:21

    Powered by Discuz! X3.4

    © 2001-2017 Comsenz Inc.

    返回頂部
    3分快3平台3分快3主页3分快3网站3分快3官网3分快3娱乐 www.1764y.com | 23599j.com | www.00708.com | www.78wcp.com | 57157p.com | www.38345f.com | www.66332e.com | www.a3a000.net | www.03088.com | 4260011.com | www.5504q.com | www.196046.com | 90856z.com | www.03088.com | 7240p.com | www.4196q.com | 35252l.com | www.hg3348.com | www.506932.com | 99111ww.com | www.6768997.com | 496.se | www.16008.com | 56033.net | www.22667712.com | 8036a.com | www.3056008.com | www.890703.com | 2649s.com | www.8582.com | 61324444.com | www.979303.com | 83378a.com | www.9980.la | 658089.com | www.1681688888.com | www.112779.com | www.hg8086.com | www.cp5658.cc | 922310.com | www.926530.com | 34c35.com | www.9187m.com | so88888cc | www.60886n.com | 2689.com | www.4521t.com | 3414400.com | www.79095c.com | 9420n.com | www.99552.com | 31194444.com | www.704902.com | 7605s.com | www.6668a.vip | 32355.com | www.wnsr3536.com | 35222tt.com | www.52062t.com | 4025r.com | www.198a56.com | 00qq8331.com | www.500go.com | www.nstar88.com | www.508477.com | www.tushan18.com | www.504733.com | www.7830n.com | www.183676.com | www.58767.com | 2618s.com | www.xiniguoji.com | vns335588.com | www.3983079.com | 4812q.com | www.3550.com | anxinbo.net | www.3846aa.com | 41178962.com | www.222xm.cc | www.21365hh.com | www.78949e.com | www.492020.com | 131ee.net | www.1100xpj.net | 553322NN.com | www.77055.com | 5004.cc | www.532918.com | www.dafa3.cc | 2381w.com | www.6880uu.com | 6633477.com | www.430188.com | 4546vip3.com | 3y9944.com | www.79500y.com | qq365p.com | www.sx139974.com | www.xpj9878.com | 11007.com | www.85857h.com | 052325.com | www.66652b.com | www.hgttt.com | www.96386v.com | www.bmw111.com | xpj62904.com | www.99788h.com | 20041.com | www.032059.com | www.526688.com | 4288l.com | www.5091o.com | www.333133w.com | 22hh8331.com | www.blr1144.com | 11989s.com | www.530781.com | www.63228.com | 9354444.com | www.7239j.com | www.70669e.com | x292888.com | www.4996gl.com | 3078u.com | www.151880.com | www.tt8088.com | tm700.com | www.602430.com | www.76188.com | 4508uu.com | www.7qxc.com | www.771990.com | 8547p.com | www.16878h.com | www.368012.com | 51337.com | www.0270f.com | www.00618u.com | 00774yy.com | www.99788f.com | www.3643j.com | 8036x.com | www.50054d.com | www.hg6136.com | 73055w.com | www.987434.com | www.88470.com | 62222g.com | www.003675.com | www.32031c.com | www.taobaobo5.com | d3410.com | www.81233x.com | www.89880033.com | 36403311.com | shtzjg.com | www.2997779.com | www.7435y.com | 27365e.com | www.5854a.cc | www.tw7788.com | 983888m.com | wlb22.com | www.0194005.com | www.37090000.com | 3662k.com | www.178329.com | www.js89c.vip | www.hg423.com | 69096c.com | www.953500.com | www.677256.com | 8827mmm.com | ee76669.com | www.68689l.com | www.47748.com | feicai0479.com | e47479.com | www.41518h.com | www.bct5123.com | 2544b3.com | 8381ss.com | www.dao90.com | www.5504j.com | 633248.com | 5003oo.com | www.763117.com | www.2807777.com | www.8814e5.com | 8159lll.cc | 2229vip.com | www.26299i.com | www.56bet365.cc | 3189y.com | wns981.com | www.911070.com | www.http://448378.com/ | www.amzr33.com | 50099h.com | 664975.com | www.66730.cc | www.917090.com | www.xpj222111.com | 66671t.com | 365wang.com | www.3933g.cc | www.f83377.com | www.6699mmmm.com | 552229.com | gfc1688.com | www.81520v.com | www.80767x.com | www.9737rr.me | www.gf8118.com | 7499822.com | 4195yy.com | www.330271.com | www.ihg5511.com | www.l5503.com | www.hg00188.com | hg7033.cc | bx394.com | www.244343.com | www.32123n.com | www.9170105.com | www.31567.ag | 88999193.com | 4289k.com | lehu9088.com | bet8688.com | www.3tdc.com | www.093728.com | www.50999j.com | www.7111g.com | f35151.com | 4880x.com | 7779q.cc | www.053883.com | www.dan70.com | www.b63568.com | www.5049j.com | www.hg988801.com | www.68666w.com | 8547o.com | hg168f.com | 0747x.com | www.511059.com | www.38394.cc | www.hg98765.com | www.169902.com | www.tyc658.com | www.8124s.com | 0033r.cc | 50067e.com | mayait.cn | 7196a.com | www.138037.com | www.fcyl0.com | www.36787h.com | www.979303.com | www.06820t.com | www.cp67771.com | www.544618.com | www.tyc357.com | www.hgjc.com | 7168b.com | 66772007.com | ylzz2221.com | s14666.com | 8538j.com | x7666.com | 11aa8332.com | p888p888.com | www.490780.com | www.912273.com | www.2109f.com | www.904027.com | www.55676w.com | www.591069.com | www.A11100.COM | www.zz00y.com | www.0234zz.com | www.3643p.com | www.hg3499.com | www.hd1239.com | pj677g.com | 9901666.com | 0033c.cc | 51200nn.com | 9995r.cc | www.bmw9964.com | 5622x.com | 32212x.com | c51iggd.com | 预览123456zz.cc | 0747l.com | y45638.com | 500000518.com | 4809l.com | zzc55.com | 2757k.com | 88807e.com | 883399g.com | 99111ss.com | 35252y.com | bet3659096.com | 33313s.com | www.4123k.app | www.pjxianggang.com | www.66098.com | www.7435q.com | www.tushan08.com | www.jsc3888.com | www.05125c.com | www.0009193.com | www.yh1386.com | www.492049.com | www.jsc222.com | www.a22.com | www.3066ss.com | www.0007795.com | www.1434h.com | www.36585555.com | www.08588y.com | www.qbwc3.com | www.599781.com | www.178615.com | l00351.com | 59889j.com | 37688g.com | 22296zt.com | rr56988.com | 1592x.com | www.67797u.com | www.4848p.com | www.227777.com | www.4727088.com | www.3421.com | www.84499t.com | www.hr7888.com | www.404099.com | 517801.com | qycp356.com | yzyz02.com | 662015.com | 7792m.com | www.656012.com | www.987111.com | www.5446tt.com | www.72002.com | www.15355h.com | www.701548.com | dz22555.com | 1669o.com | 34n35.com | 3018kk.com | www.i7727.cc | www.938.cc | www.1764y.com | www.1368o.cc | www.35155u.com | 667766m.com | 57157q.com | www.240zr.com | www.22554100.com | www.xpj16682.com | www.66652n.com | www.390500.com | 0860n.com | 34o35.com | www.g67783.com | www.aa56108.com | www.9895k.com | www.9356j.com | www.187397.com | p888888.com | 91019j.com | www.483828.com | www.988800.com | www.350c6.com | www.c135.vip | bojue009.com | longfa2.com | www.56520v.com | www.83568t.com | www.504446.com | www.401278.com | 1389t.com | 2455n.com | www.22554100.com | www.490803.com | www.962095.com | 3559qqq.com | 8988b.com | www.007733.com | www.357107.com | www.yi695.com | 5003o.com | 53358v.com | www.pj4180.com | www.b35ll.com | www.4189c.com | 2677ddd.com | m14666.com | www.995v.net | www.http://1018js.com/ | www.hx1177.com | www.80969x.com | www.00840w.com | hb61788.com | 80368ii.com | www.kelake66.com | www.087n.com | www.209703.com | 0206.com | www.991224.com | www.lhg888.com | www.781217.com | 108143.cn | www.323788.com | www.777jyh.com | www.u98478.com | www.178762.com | 93922e.com | www.25288i.com | www.36yl.com | www.66653e.com | ff4119.com | www.79665c.com | www.33mgm777.com | 11018s.com | 86811rr.com | www.208178.com | www.08588u.com | 76886c.com | 55899w.com | www.38345s.com | www.cf9907.com | 9101903.com | www.hg2968.com | www.52062q.com | www.29277o.com | 22993882.com | www.5049o.com | www.912480.com | 66136a.com | www.3844b.com | www.96386c.com | 3644e.com | www.ylg4499.com | www.40288c.com | www.022175.com | www.60123e.com | 001122335.com | www.18484.com | www.89wcp.com | 2222k06.com | www.m8867.com | www.52303d.com | bwinkkkcom | www.www8181sun.com | www.4923m.com | 0343i.com | www.h7788b.com | www.588vip.top | hy846.com | www.7830c.com | www.pj56g.com | bmw8099.com | www.88807n.com | www.88065c.com | 61788.am | www.98333.com | www.008ac.com | 222.am | www.1389mm.com | www.701361.com | bs78911.com | www.7788msc.com | www.43131m.com | 5005m.com | www.97828w.vip | jinlong01.com | www.05125a.com | www.66026.cc | 3522j.cc | www.89599z.com | 97618i.com | www.un1515.com | www.16065p.com | 59963.la | www.pj2348.com | www.550806.com | 3178tt.com | www.wns66.me | 1106.com | www.3833ww.com | www.560905.com | mgm3242k.com | www.37377x.com | xpj3432.com | www.d22365.com | www.196807.com | www.45601.com | www.110073.com | 2172299.com | www.801917.com | feicai0436.com | www.hg5878.com | www.1368v.cc | 73055g.com | www.7920t.com | gc003.cc | www.0849j.com | 444000eee.com | www.cai73dd.com | www.910997.com | feicai0596.com | www.bet365yazhou.com | 4036j.com | www.3066jj.com | chinajtw.com | www.b4127.com | hlw1177.com | www.13658017870.com | www.680955.com | 4066gg.com | www.7782s.com | mg437777.com | www.rfdc05.com | 3559a.com | www.0600e.cc | 3658766.com | www.35700a.com | 1389u.com | www.klcp005.com | 61322244.com | www.jl11111.com | hg57977.com | www.8349.com | 500000435.com | www.pj5747.com | x48x.com | www.7736.com | 4270cc.com | www.688558.com | 0245d.com | www.5441x.com | 86611s.com | www.4809c.com | 29533.com | www.234567.pw | 3510.com | www.954321n.com | 78885.com | www.aobo192.com | t77304.com | www.win1239.com | p5429.com | www.818226.com | 55545e.com | www.26163f.com | 73999e.com | www.ct8800.com | www.wn285.com | www.399957.com | www.as0002.com | 7720w.com | www.681378.com | 9149l.com | www.mgm555555.com | hg999333l.com | www.2848.com | 32yxw.com | www.50051d.com | 081965.com | www.723035.com | www.58777g.com | mgbet.vg | www.79500r.com | 7605m.com | www.55676a.com | x72227.com | www.2934u.com | www.32126i.net | www.165595.com | www.03365g.com | 7894z.com | www.42070016.com | 11mm8332.com | www.hqcp2.com | www.333133h.com | 8988i.com | www.50999n.com | sb83.com | www.66652n.com | www.s1128.com | www.068651.com | www.9611msc.com | 1331aa.com | www.8582qq.com | yun8123.com | www.216299.com | www.68228p.com | 474.com | www.8d444.com | www.zb0210.com | www.177417.com | www.x948x.com | 11749.com | www.66870.cc | www.tyc636.com | 88807.com | www.js89j.vip | 237844.com | www.332790.com | www.998855o.com | 3559t.com | www.2109c.com | www.hg773999.com | 5478m.com | www.sx1800.com | www.8494d.com | 84511.com | www.62979w.com | 44077o.com | www.214654.com | www.55545d.com | yf788.net | www.593500.com | www.489239.com | sss1915.com | www.895020.com | www.15508c.com | 5219l.com | www.995771.com | www.dd65.com | 6099333.com | www.979683.com | www.hg8104.com | 04666f.com | www.977657.com | www.32208d.com | 9659g.com | www.625477.com | www.57157.com | 2jsuuu.com | www.303473.com | www.cn365c.com | 667766w.com | 2381rrr.com | www.188611.com | www.hg4111.com | 1305777.com | www.hg6767a.com | www.99338.com | 8557i.com | www.c6093.com | www.55526z.com | 6150l.com | www.90305a.com | www.js9595.com | www.xj5577.com | 22qq8332.com | www.3933n.cc | www.3535h.com | 00048d.com | js345345.com | www.48330r.com | www.r8867.com | 33382dd.com | www.658770.com | www.bet63j.com | www.tyc654.com | 22205pj.com | www.77qxc.com | www.mhcp4.com | www.sjgc4.com | www.50999g.com | 54141188.com | 2381a.com | www.999xm.cc | www.98698w.com | x48u.com | 2548546.com | www.959552.com | www.hg98j.com | www.jz977.com | 3225m.com | www.818827.com | www.am8333.com | www.63877n.com | 2172226.com | www.382780.com | www.668puj.com | www.dy1199.com | 4022oo.com | d61653.com | www.57578b.com | www.c668ln.com | 500000423.com | 8381dd.com | www.c5237.com | www.bwinyz26.com | www.tyc775.com | 3957u.com | 7742r.com | www.0194001.com | www.642222.com | 2247gg.com | 2466.com | www.cb2388.com | www.1429g2.com | www.40686e.com | 55323t.com | 3089a.com | www.25688h.com | www.caipiao88a.com | www.28758x.com | 0615018.com | sss006.com | www.3978o.com | www.489239.com | www.86611u.com | hg999333r.com | www.luck886.com | www.22062c.com | www.38345s.com | www.309181.com | 84494444.com | 684526.com | www.196067.com | www.55228j.com | www.bwinyz05.com | www.10050939.com | 500000434.com | 022531.com | 0008c.com | www.ya044.com | www.830217.com | www.hg8449.com | www.a1a444.cc | 3807ww.com | zyrb.com.cn | www.361706.com | www.61655c.com | www.7hg6668.com | www.3775622.com | 365004.net | 992222e.com | 892979.com | www.153946.com | www.3005v.com | www.abc288.com | www.56655c.com | www.pj4180.com | 33115a.com | 9068w.com | 22296aa.com | www.54400i.com | www.fl62.com | www.4331d.com | www.hg8bb.com | www.v6187.com | www.912399.com | m77304.com | 3473w.com | 3678vv.com | betbet365.com | www.775020.com | www.73736d.com | www.456.tm | www.4972u.com | www.hg9509.com | www.44455508.com | 124058.com | wuxixhh.com | 3304y.com | 55797x.com | 301111.com | www.327831.com | www.ascp7.com | www.87668j.com | www.1199nsb.com | www.89599f.com | www.fc924.com | www.h2272.com | www.bb5577.com | youle307.com | 2190z.com | yh645.cn | j333.cc | 52599v.com | 1331h.com | 284123.com | 53166o.com | www.129177.com | www.717772.com | www.w408.com | www.98599.cc | www.97655n.com | www.68993221.com | www.4102j.com | www.00778l.com | www.hg98097.com | www.721408.com | www.vns303.com | www.345188.com | www.xpj29666.com | www.58777w.com | www.y6889.com | www.85770l.com | www.a3a666.cc | 2778xl.com | feicai0353.com | 8883.cc | 2306r.com | 2595p.com | 8290c.com | 56988s.vip | hgyz5.com | 9030k.com | 8722eeee.com | 6269pp.com | 50000990.com | 8290z.com | 2649w.com | 2629.com | sxpj62622.com | 6641u.com | www.kfa6.com | www.m.hg763.com | www.182ks.com | www.617704.com | www.43434688.com | www.777444g.com | www.2267111.com | www.11446547.com | www.211345.com | www.477518.com | www.k89299.com | www.56655c.com | www.6405pj04.com | www.biying910vip.com | www.35700a.com | www.1117795.com | www.68365u.com | www.9989576.com | www.7239.net | www.8667x.com | www.c5905.com | www.689253.com | www.305388.com | l58qa.com | mgm.com | 22117m.com | bet365ll.com | 8037.com | 6245h.com | 6175r.com | www.192022.com | www.hg663.com | www.vs88.com | www.4963ww.com | www.3824.com | www.6939j.com | www.99340.cc | www.891477.com | www.243552.com | 500000435.com | 22ll8332.com | www.42456677.com | www.50732f.com | www.975367.com | www.176225.com | feicai0701.com | 59963.la | 75959s.com | 77p88.cc | www.76543o.com | www.89266.com | www.137603.com | www.5446y.com | www.87668b.com | www.972876.com | www.055168.cc | 97799z.com | 88119o.com | 00005858.com | www.8124k.com | www.888233.com | www.682260.com | www.1764w.com | www.7782j.com | www.375939.com | jnhpjx.com | swtyjc.com | 667766.com | www.39695h.com | www.66.42.42.157 | www.6687t.com | www.61655x.com | www.589544.com | vns335588.com | 9994net0.com | 30007n.com | www.362833.com | www.2945i.com | www.4809o.com | www.005ac.com | www.41518t.com | 9121901.com | 2127t.com | www.338808.com | www.kxm06.com | www.495.gg | www.cszb6.com | 083900.com | lh66k.com | bwinrrr.com | www.6372008.com | www.47506l.com | www.7782i.com | pj800.cc | 69111u.com | 111122rr.com | www.hg3701.com | www.32031m.com | www.flff7.com | 5446v.com | 71707r.com | www.a1a777.net | www.1759.com | www.67258b.com | www.50054i.com | 0289f.com | www.22264400.com | www.hjdc2004.vip | www.5952233.com | www.560231.com | 3559zz.com | 3141.com | www.591999.com | www.48330t.com | www.540707.com | 29918v.com | 80579a.com | www.9ag88.com | www.yt2019.com | www.133902.com | 8668099.com | www.b3652.com | www.4963dd.com | www.9205c.com | 1483kk.com | 0765211.com | www.3877msc.com | www.7240a.com | www.343552.com | 407.com | www.9374o.com | www.a30666.com | www.qbwc4.com | 26444d.com | 883399k.com | www.060sunbet.com | www.87668q.com | 69448833.com | 7720743.com | www.hg6266.com | www.js18682.com | 73006.com | 80368w.com | www.hc8888.com | www.28891h.com | x48x.com | 7933.com | www.bsyedu.com | www.71399g.com | 0044.cc | 256777b.com | www.dfh300.com | www.0719.cc | 6033e.com | www.5000bjl.com | www.n69096.com | www.670137.com | 33kbk.com | www.sun3388.net | www.5856878.com | 33778016.com | 83377o.com | www.232060.com | www.wcp6698.com | 162970.com | www.330099t.com | www.55717h.com | 89892bb.com | 1077sss.com | www.tyc8138.com | www.607323.com | 3467k.com | www.kk1778.com | www.59191.cc | 8159mm.cc | www.v27229.com | www.5859118.com | 9411aaa.com | pj535.cc | www.30350n.com | 84494477.com | 996622rr.com | www.57800h.com | www.355018.com | 6261mm.com | www.yzcp2025.com | www.lg7717.com | 672bet.com | www.hjcp444.com | www.816142.com | 78808k.com | www.cx9871.com | www.978913.com | 3467c.am | www.008520.com | www.cp703.vip | u40033.com | www.42423499.com | www.797884.com | o58955.com | www.848434.com | www.458178.com | cc38648.com | www.b35hh.com | www.36166v.com | 6655734.com | www.xpj8118.com | 44488n.com | www.256333.com | www.91233t.com | 35pp.vip | www.6y7y.cc | www.901372.com | 86811cc.com | www.4446eee.com | www.50026u.com | bet99336.com | www.hr499.com | ll7742.com | www.y4466.com | www.ya313.com | 69096i.com | www.8473h.com | 8988y.com | www.76060n.com | www.78700n.com | 78666g.com | www.370179.com | www.118428.com | fff3304.com | www.13434b.com | 7508v.com | www.102149.com | www.320493.com | 455.com | www.3301866.com | 5360uu.com | www.68277111.com | www.99638i.com | www.hg338338.com | www.68682c.com | 9068u.com | www.bet91487.com | feicai0458.com | www.a4568.com | www.cb6888.com | 8290e.com | www.339333.cc |