<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: 久久国产热这里只有精品| 一区二区不卡99精品日韩| 18禁国产一区二区三区| 波多久久夜色精品国产| 国产av丝袜旗袍无码网站| 免费人成再在线观看网站| 亚洲欧美中文字幕日韩一区二区| 亚洲伊人不卡av在线| 国产精品视频一区二区不卡 | 亚洲欧洲日产国无高清码图片| GV无码免费无禁网站男男| 欧美性69式xxxx护士| 亚洲第一狼人成人综合网| 日本在线视频网站www色下载 | AV人摸人人人澡人人超碰| 国产福利酱国产一区二区| 色一情一乱一伦视频| 久久国产精品精品国产色婷婷| 免费人成网站视频在线观看 | 亚洲国产欧美中文丝袜日韩| 女人高潮抽搐喷液30分钟视频| 亚洲精品人妻中文字幕| 精品一区二区三区四区五区| 国产精品一区中文字幕| 免费无码黄网站在线观看| 2021最新国产在线人成| 91午夜福利一区二区三区| 亚洲精品天堂在线观看| 欧美国产日韩一区二区三区精品影视| 亚洲激情av一区二区三区| 日本做受高潮好舒服视频| 日本不卡码一区二区三区| 激情自拍校园春色中文| 99re热精品视频中文字幕不卡| 精品久久人人做爽综合| 蜜臀午夜一区二区在线播放| 国产精品高清中文字幕| 无码日韩做暖暖大全免费不卡| 国产不卡精品视频男人的天堂| 久久综合色之久久综合色| 94人妻少妇偷人精品|