<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          City with worst air pollution vows change

          Updated: 2011-12-30 13:34

          (Xinhua)

            Comments() Print Mail Large Medium  Small

          LANZHOU - The top official of a northwest China province has pledged to clean up the sky over the provincial capital after it was named China's city with the worst air pollution by a World Health Organization (WHO) survey published in September.

          Lanzhou, a heavy industry city situated in the Yellow River valley in the country's arid northwest, ranked the worst among Chinese cities in the WHO's survey tracking air pollution by the levels of airborne particles smaller than 10 micrometers (PM10) measured in 1,086 cities in the world, mostly between 2008-2009.

          Lanzhou's annual PM10 average was 150 micrograms per cubic meter, dramatically higher than the WHO-recommended upper limit of 20 micrograms per cubic meter. The Geneva-based organization says PM10s can cause heart disease, lung cancer, asthma, and acute lower respiratory infections.

          In winter, the most polluted season, Lanzhou is typically shrouded in a haze that can block sunlight to the extent that the day is sometimes as dark as the night. Residents generally avoid opening windows, otherwise their furniture will soon be coated in thick dust.

          Wang Sanyun, the newly-appointed top official of Gansu province, said that his government "is resolved to win the tough and arduous battle against air pollution."

          Wang, secretary of the Gansu provincial committee of the Communist Party of China, told provincial officials Thursday that the government will go after factories releasing pollutants, promote clean energy in public transport, build subways and light rails to reduce car exhaust emissions, and replace coal with natural gas to sustain the city's winter heating system.

          Due to an urbanization rush, most cities in China face tremendous challenges in keeping air pollution in check. Only one in the 31 Chinese cities included in the WHO survey had PM10 levels under 50 micrograms per cubic meter, while the vast majority of European and North American cities reported PM10 levels under 50 micrograms per cubic meter.

          Many Chinese cities have been periodically enveloped in smog this winter, but the official air quality index typically classifies pollution as "light," deepening public frustration over the quality of air people breathe every day.

          Minister of Environmental Protection Zhou Shengxian has urged a prompt overhaul of the current air quality monitoring standard to factor PM2.5 - the measure of microscopic airborne particles smaller than 2.5 micrometers - as well as measures of ozone and carbon monoxide into its pollution monitoring system.

          主站蜘蛛池模板: 国产成人久视频免费| 亚洲欧美人成人综合在线播放| 欧美亚洲日韩国产人成在线播放 | 亚洲精品一区二区毛豆| 精选国产av精选一区二区三区| 极品美女自拍偷精品视频| 久久精品免费观看国产| 国产午夜在线观看视频| 无码专区 人妻系列 在线| 黑森林福利视频导航| 国产精品有码在线观看| 国产精品一区二区三区精品 | 国产自产视频一区二区三区| 国产欧美日韩精品第二区| 一个色综合国产色综合| 老司机aⅴ在线精品导航| gogogo高清在线播放免费| 日本一道本高清一区二区| 日本一区二区三区看片| 无套内谢少妇一二三四| 97se亚洲综合不卡| 五十路久久精品中文字幕| 黄网站欧美内射| 国产精品午夜福利在线观看| 国产免费无遮挡吸乳视频在线观看| 高潮迭起av乳颜射后入| 久久99精品中文字幕在| 亚洲高清WWW色好看美女| 草裙社区精品视频播放| 亚洲乱码一二三四区国产| 国产一区二区三区av在线无码观看| 粗大猛烈进出高潮视频大全| 日韩人妻不卡一区二区三区| 久久久久人妻精品一区三寸 | 色噜噜狠狠成人综合| 亚洲精品中文字幕码专区| 国产一区二区三区禁18| 亚洲国产欧美在线人成| 波多野结衣一区二区免费视频| 91久久精品美女高潮不断| 国产亚洲精品国产福APP|