男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影

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: 开平市| 辽宁省| 盐源县| 广饶县| 沐川县| 南通市| 吉安市| 高州市| 施秉县| 澎湖县| 嘉祥县| 方城县| 广安市| 浑源县| 城固县| 井陉县| 石河子市| 谢通门县| 革吉县| 苍南县| 石棉县| 甘洛县| 宜春市| 通河县| 沛县| 上虞市| 格尔木市| 当涂县| 句容市| 正镶白旗| 肥东县| 扎兰屯市| 广河县| 嘉义市| 桃园市| 英山县| 吉林省| 从江县| 方正县| 佛冈县| 高阳县| 盐城市| 庐江县| 万州区| 盘锦市| 宝应县| 济阳县| 延川县| 文安县| 麦盖提县| 中宁县| 砀山县| 都江堰市| 扶绥县| 张家界市| 苍山县| 西丰县| 云浮市| 阿城市| 宁蒗| 疏勒县| 三穗县| 微山县| 兴仁县| 太白县| 开化县| 蕉岭县| 南溪县| 镇远县| 墨玉县| 大名县| 上栗县| 陆川县| 长葛市| 靖江市| 广灵县| 古蔺县| 孟村| 湄潭县| 大埔区| 大洼县| 沾化县|