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

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

Coal burning in China's north can shorten lives

By WANG QIAN | China Daily | Updated: 2013-07-10 02:37

Coal burning in China's north can shorten lives

Buildings loom out of the haze in this view from a window in Beijing's Central Business District on Tuesday. Air pollution is shortening the lives of people in northern China by about 5.5 years, an international study shows. Jason Lee / Reuters 

Research shows people in polluted areas live an average of 5.5 years less

Heavy air pollution reduces life expectancy, a new study has found, ringing an alarm for policymakers looking to create their future energy roadmap.

The research published in the Proceedings of the National Academy of Sciences, a US multidisciplinary scientific serial, said on Tuesday that air pollution from burning coal caused people in northern China to live an average of 5.5 years less than the people living in the south. Coal burning has been providing heat to the north for decades.

"The study gives a clear answer to the link between life expectancy and air pollution," Li Hongbin, an economics professor at Tsinghua University School of Economics and Management in Beijing who collaborated with researchers in China, the US and Israel on the study, told China Daily on Tuesday.

The study analyzed the total suspended particulate matter and deaths in 90 cities across China from 1981 to 2000, finding a sharp difference in mortality rates on either side of the Huai River, which is the border giving people living north of the line free heating in winter.

"With the heating policy, the northern areas have been exposed to more pollution than the southern areas, which makes the study possible," Li said, adding that low rates of migration during this period were also key to the study.

Air pollution in the north from burning coal was 55 percent higher than in the south between 1981 and 2000, while life expectancies were 5.5 years lower on average across all age ranges.

The researchers said the differences in life expectancies were due mainly to increased deaths caused by diseases related to air quality, such as heart disease, stroke, lung cancer and respiratory illnesses.

Their analysis estimated that every additional 100 milligrams of total suspended particulate matter per cubic meter in the atmosphere lowers life expectancy at birth by about three years.

Total suspended particulate matter includes large particles and PM 2.5 — particles with diameters less than 2.5 micrometers — which are of great health concern because they can penetrate deep into the lungs. However, the researchers lacked the data to analyze those tiny particles separately.

"The real situation might be worse than the study showed, because PM 2.5 can be more harmful to health," Li added.

Gan Quan, senior project officer of the International Union Against Tuberculosis and Lung Disease, said the study was necessary in helping authorities be aware of the impact of air pollution and to adjust policies.

"We need such research to give a clear link between air pollution and life expectancy," Gan said.

Li agreed, adding that the study wasn't meant as a comment on the coal-heating policy, but to let the results show that the Chinese government should make of an effort to fight air pollution.

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: 99久久香蕉| 中文字幕在线观看国产 | 国产欧美一区二区三区沐欲 | 欧美xxxxx九色视频免费观看 | 久久精品国产欧美 | jk制服福利在线播放 | 美国第一毛片 | 欧美在线一级片 | 欧美一级日韩一级 | 美女一级毛片毛片在线播放 | 久久精品视频免费播放 | 成人欧美一区二区三区在线 | 久久99亚洲网美利坚合众国 | 成年人免费观看视频网站 | 日韩精品一区二区三区四区 | 精品国产91久久久久久久a | 成人韩免费网站 | 97在线视频精品 | 国产欧美一区二区 | 在线观看免费国产 | 欧美一级高清黄图片 | 欧美猛交xxxx免费看 | 国产成人亚洲精品77 | 亚洲2020天天堂在线观看 | 国产亚洲欧美在线人成aaaa | 欧美xxxxx色视频在线观看 | 亚洲欧美日韩久久一区 | xxx免费视频 | 欧美 日韩 国产 在线 | 尤蜜网站在线进入免费 | 国产日产久久 | 免费观看a黄一级视频 | 99久久国内精品成人免费 | 一区二区三区视频免费观看 | 999成人国产精品 | 在线观看免费av网 | 女人又黄的视频网站 | 久草在线视频免费资源观看 | 黄黄的网站在线观看 | 国产成人tv在线观看 | 久久欧美精品欧美久久欧美 |