日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
China / Society

Fewer fireworks help keep air clean

By Zheng Jinran (China Daily) Updated: 2016-02-16 08:02

Beijing saw three days of blue skies last week, a 16 percent year-on-year decrease in PM2.5

Fewer fireworks help keep air clean

A closed fireworks booth in Beijing after an officially permitted sale period came to an end on Friday. LI WENMING/CHINA DAILY

Beijing enjoyed better air quality during the weeklong Spring Festival holiday compared to last year thanks to wind and fewer fireworks, the capital environment authority said on Monday.

From Feb 7 to 13, the capital saw three days with good air quality and a large reduction in the average reading of PM2.5 - which decreased by 16 percent from the same period in 2015, according to the Beijing Municipal Environmental Protection Bureau.

PM2.5 refers to particulate matter less than 2.5 microns in diameter that is hazardous to human health. Its average reading during the holiday was 98 micrograms per cubic meter, down from 117 in 2015.

Residents also saw three days where pollution reached medium and heavy levels, when it is suggested that seniors and children stay indoors.

"More days with better weather to disperse air pollutants and fewer fireworks were the major contributors to the improvement in air quality," Sun Feng, senior engineer in air quality monitoring of the Beijing Municipal Environmental Monitoring Center, said on Monday.

It's estimated that sales of fireworks in Beijing saw a year-on-year reduction of 20 to 30 percent, the bureau said.

Fewer fireworks did alleviate air pollution during the week, but they were still a prominent contributor to soaring pollution on the eve and day of Spring Festival (Feb 8), the bureau said.

On the festival eve, Beijing saw PM2.5 readings climb quickly from a 'good' level of less than 100 at 7 pm on Feb 7 to 1,000 - the most hazardous level - before 6 am on Feb 8, the municipal environment watchdog said.

Most cities experienced the same situation, the Ministry of Environmental Protection said.

Among the 338 cities with regular air quality monitoring, 271 saw air quality failing to reach the national safety level from the eve to the morning of Spring Festival, 54 more than in 2015, said Hu Kemei, deputy head of the pollution monitoring department under the ministry.

Among the polluted cities, residents in 66 cities saw the pollution index reach the highest level.

Hu said fireworks were a major contributor to the soaring PM 2.5 readings.

Setting off fireworks to embrace the Spring Festival is a tradition for Chinese.

There have been debates for years on whether to forbid fireworks, and many cities have issued restrictions.

"I noticed the choking air when setting off firecrackers, but it's also the smell of the holiday, reminding me of a new year's arrival," said Zhang Dong, a 28-year-old from Shijiazhuang, Hebei province.

"I can bear the temporary jump in pollution on that special night."

Highlights
Hot Topics
...
主站蜘蛛池模板: 黄色片视频免费 | 国产成人精品视频在线观看 | 精品国产一区二区三区久久狼黑人 | 欧美黄色一级视频 | 成人在线播放网站 | 欧美极品在线观看 | 天天爽天天操 | 日韩精品成人 | 欧美日韩a v | 特级西西444www大精品视频免费看 | 欧美36p| 欧美一级片在线观看 | 超碰在线9 | 无码少妇一区二区三区 | 久久久久久影视 | 日韩中文字幕av | 欧洲激情网 | 在线观看国产成人 | 成年人在线视频观看 | 国产欧美一区二区三区在线老狼 | 偷拍欧美亚洲 | 国产一区二区精品在线观看 | 久久国产成人精品av | 黄色av一区二区 | 国产精品av久久久久久无 | 纯爱无遮挡h肉动漫在线播放 | 日韩超碰在线 | 天天操天天操天天干 | www.超碰在线观看 | 午夜肉体高潮免费毛片 | 中文字幕网站在线观看 | 九九影院在线观看 | 国产大学生自拍 | 青青国产在线 | 午夜视频免费 | 国产精品一区视频 | 中文国产 | 8x国产一区二区三区精品推荐 | av在线首页 | 午夜久久久久久久久久久 | 一级黄色在线 |