三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Environment

New cloak of smog to descend on Hebei province

By Zhang Yu in Shijiazhuang | China Daily | Updated: 2017-12-01 08:22

North China's Hebei province issued an orange alert for air quality on Thursday because of severe air pollution that will envelop the province and neighboring regions from Friday to Sunday, according to the Hebei Environmental Protection Bureau.

It is the second time this year that Hebei, typically shrouded by heavy smog in winter, has issued a regional alert. The first orange alert - the second-highest level for air pollution - was issued in early November.

"Because of a new round of disadvantageous weather, including low atmospheric pressure, slow winds and high humidity, it is hard for airborne pollutants to disperse," said Wang Xiaoli, director of Hebei province's Environmental Emergency and Heavy Pollution Weather Forewarning Center.

Though weather conditions will keep severe smog around for three days, pollutants discharged into the air remain the primary source, he said.

Under an orange alert, emergency responses to the pollution were started on Thursday in 10 cities in the province.

More than 6,000 polluting companies will take turns suspending operations and another 8,000 firms will temporarily reduce emissions to ensure a reduction of at least 20 percent during the period.

Cities in neighboring Henan province, such an Anyang, will also suffer from severe air pollution, while the air in Beijing and Tianjin will be slightly affected, Wang said.

Air quality is expected to improve starting on Sunday night, with the influence of a cold front that will disperse pollutants.

Northern China usually experiences worsening air quality in late autumn and winter partly due to less wind and increased emissions from heating sources, especially coal burning.

According to the provincial environmental protection bureau, 30 percent more pollutants are discharged in Hebei during the heating season.

To cope with that, Hebei is replacing coal for family heating with electricity or gas, shutting down illegal polluting companies and limiting production in heavy industries such as iron, steel and coking.

The province is also increasing its investment in technology for environmental monitoring to better forecast smog and control pollutants.

"We are considering introducing high-tech instruments that use a LIDAR - or light detection and ranging system - to precisely monitor particulate matter in the air," said Huang Yunlong, who works at the bureau's development service center.

According to Huang, the instruments are carried in a vehicle and can monitor a certain area's pollutants in three-dimensional space, unlike traditional stationary monitors.

The province's average density of PM 2.5 - particulate matter with a diameter less than 2.5 microns - fell by 25.3 percent year-on-year in the last two months to 62 micrograms per cubic meter, according to the monitoring center.

zhangyu1@chinadaily.com.cn

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 97视频福利 | 国产精品久久久久乳精品爆 | 免费操人 | 国产三级在线观看播放 | 丁香婷婷激情网 | 一级黄色在线观看 | 一级做a爰片性色毛片男 | 成人综合网站 | 看三级毛片| 91在线精品免费观看 | 91四虎国自产在线播放线 | 日韩经典欧美一区二区三区 | 欧美一级视频在线观看欧美 | 国外成人在线视频网站 | 在线国产一区 | 日本wwxx| 特级全黄大片 | 91国内在线观看 | 国产成人啪精品视频免费网站软件 | 在线观看日本三级 | 好硬好湿好爽再深一点h视频 | 午夜视频免费在线观看 | 亚洲精品手机在线 | 亚洲国产激情一区二区三区 | 国产v日韩v欧美v精品专区 | 国产亚洲女人久久久久久 | 亚洲国产成人久久三区 | 性做久久久久免费看 | 国产高清在线精品 | 亚洲欧美日韩综合在线播放 | 国产高清精品入口麻豆 | 国产精品欧美亚洲韩国日本99 | 久在草视频| 国产精品jizz在线观看网站 | 免费国产一级特黄aa大片在线 | 天天久久| 亚洲精品综合网在线8050影院 | 亚洲欧美日韩在线中文一 | 美女被网站免费看九色视频 | 亚洲第一免费播放区 | 国产老头老太性视频 |