www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

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 分享按鈕 0

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: 欧美精品成人3d在线 | 国内精品伊人久久 | 玖玖这里只有精品 | 欧美成人高清在线视频大全 | 99ri在线观看| 台湾三级香港三级经典三在线 | 日本美女性爱 | 在线视频日韩 | 日韩a级一片 | 免费在线亚洲视频 | 香蕉久久成人网 | 久草在线视频在线观看 | 91在线免费公开视频 | 国产高清免费影视在线观看 | 亚洲天堂男人网 | 亚洲黄区| 国产在线毛片 | 亚洲色在线视频 | 美国一级片在线观看 | 日本亚洲欧美在线 | 成人精品免费网站 | 美女一级毛片毛片在线播放 | 国产成人免费片在线视频观看 | 久久精品道一区二区三区 | 国产成人a福利在线观看 | 免费成人一级片 | 久草免费新视频 | 成年人在线观看视频网站 | 在线视频日韩精品 | 日本在线免费观看视频 | 久久久日本久久久久123 | 国产亚洲欧美另类久久久 | a级片在线 | 亚洲成人中文字幕 | 国产黄色片一级 | 色精品视频 | 亚洲国产欧美日韩第一香蕉 | 亚洲国产精品一区二区三区 | 国产手机精品视频 | 久久大胆视频 | 日本亚洲成高清一区二区三区 |