<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

          Beijing air gets 'better' but still lacks target

          Updated: 2012-01-09 07:13

          By Zheng Xin (China Daily)

            Comments() Print Mail Large Medium  Small

          BEIJING - The amount of tiny particulate matter in the air detected in the capital has been decreasing in the past 10 years, according to the city's environmental protection regulator.

          However, the average reading for PM2.5 (particulate matter smaller than 2.5 micrometers) - a major cause of harmful smog - in 2010 in Beijing, was still double the target of 35 micrograms a cubic meter (cu m) set by the Ministry of Environmental Protection.

          "As a developing country, despite the government's efforts in promoting the city's air quality in the past 10 years, China still has a long and tough road to go to meet the public's expectations," said Yu Jianhua, director of the air pollution control division of the Beijing municipal environmental protection bureau.

          The average annual PM2.5 density in the capital decreased from 100 to 110 micrograms a cu m in 2000 to 70 to 80 micrograms a cu m in 2010, according to data collected by the bureau from scientific and research institutes based in the capital.

          The average annual density of PM2.5 in Shanghai was 44 to 53 micrograms a cu m from 2006 to 2010, according to the Shanghai government.

          The Beijing municipal environmental monitoring center started collecting PM2.5 data five years ago for research purposes, but hasn't accumulated any official data so far.

          "Based on academic dissertations we have collected so far, the capital has witnessed a decline in PM2.5 density," said Yu. "We will continue collecting and releasing more detailed data to the public in the near future."

          "Due to the different locations of air monitoring stations, the readings for PM2.5 might vary a little bit," said Yu. "But the data we collected show a clear drop of PM2.5 density so far."

          In response to the official's claim about the decline of PM2.5 density in recent years, some residents expressed doubt.

          "I don't see any improvement in the air quality in the capital in the past few years with the number of motor vehicles soaring," said Wang Yu, 26, a Beijing resident.

          Many cities in China face challenges in meeting standards for a stricter index for gauging air quality.

          Wang Qiuxia, a researcher at Green Beagle, an environmental protection non-governmental organization based in the capital, said it was a step forward since the readings for the pollutants could ultimately help control emission of the pollutants, by acting as a warning.

          According to the bureau, the city will continuously improve the air quality by cutting down automobile pollution, reducing industrial emissions and further cooperating with neighboring cities.

          "There are less than 5 million motor vehicles in the city," said Yu. "In congested cities like Beijing, incomplete combustion of fuel would lead to a tremendous increase in the density of PM2.5."

          The government will further raise vehicle emission standards and use more clean energy, according to the bureau.

          "To improve the city's air is a task requiring cooperation," Du Shaozhong, deputy director of the bureau, told China Daily.

          "We should collaborate with neighboring cities" to solve the problem, Du said.

          主站蜘蛛池模板: 97人妻中文字幕总站| 樱桃视频影院在线播放| 亚洲精国产一区二区三区| аⅴ天堂国产最新版在线中文| 人妻无码中文专区久久app| 人妻丝袜中文无码av影音先锋| 亚洲一区二区三区高清在线看| 116美女极品a级毛片| 国产精品一区亚洲一区天堂| 亚洲一区二区在线av| 国产精品无码成人午夜电影| 亚洲AV高清一区二区三区尤物| 精品久久久久久无码免费| 亚洲狠狠色丁香婷婷综合| 色欲国产精品一区成人精品| 99热在线只有精品| 亚洲另类激情专区小说图片| 人妻少妇伦在线无码专区视频| 亚洲美女少妇偷拍萌白酱| 成人特黄特色毛片免费看| 亚洲乱码精品久久久久..| 人妻丝袜无码专区视频网站| 国产高清无遮挡内容丰富| 亚洲美免无码中文字幕在线| 国产成人国产在线观看| 日本东京热一区二区三区| 又爽又黄又无遮挡的视频| 亚洲av一本二本三本| 国产a在视频线精品视频下载| 97一期涩涩97片久久久久久久| 免青青草免费观看视频在线 | 亚洲欧洲久久激情久av| 国产偷自视频区视频| 中文字幕va一区二区三区| 久久亚洲av午夜福利精品一区| 日韩av在线不卡一区二区三区| 国产资源精品中文字幕| 精品国产中文字幕av| 另类 亚洲 图片 激情 欧美| 97久久超碰国产精品旧版| 四虎永久精品免费视频|