Go homepage(回首页)
Upload pictures (上传图片)
Write articles (发文字帖)

The author:(作者)delv
published in(发表于) 2014/1/2 8:34:39
Chinese academics confirmed that motor vehicles in Beijing’s air major pollution source

CNS, Beijing, January 2 (reporter Kan Feng)-"every Research Institute's research has a different background and prerequisites, but motor vehicles for Beijing, a major source of pollution of the air, it should be said in the academic field was adequately established. "Atmospheric environment in Beijing municipal environmental protection Bureau Director Yu Jianhua said today.

In recent days, according to a study from the Institute of atmospheric physics, Chinese Academy of Sciences, Beijing sources of PM2.5 has 6 key, namely, soil dust, coal, biomass burning, auto exhaust and waste incineration, industrial pollution and secondary inorganic aerosols. Among them, became major sources of PM2.5 pollution of fossil fuel combustion emissions, vehicle exhaust accounts for less than 4%.

According to the report, the past few days, network around the "Beijing automobile exhaust in PM2.5 accounted for less than 4%" discussions caused concern.

2nd Beijing environmental protection agency held a press conference, inform the 2013 Beijing's air quality conditions. Press release, in view of the above dispute, Yu Jianhua told Xinhua reporters interview responded by saying: "motor vehicle pollution in Beijing is the main source of pollution. It is not only through model analysis of our results, results of monitoring measurement of pollutants. ”

Yu Jianhua introduction, according to the Beijing environmental protection monitoring center's findings, sources of air pollution in Beijing in two major categories, one category is local emission sources, with one source of external transport, external transfer 24.5%, others 75.5% for local pollution emissions.

"In local pollution sources in 75.5%, motor vehicle pollution than the maximum, with 22.2%, followed by coal-burning, 16.7%, industrial pollution, 16.3%, dust pollution, 15.8%, 4.5%. In addition, yearly cuts in coal use, and motor vehicle ownership increases, so, judging from the future, Beijing's air pollution will gradually from the ' coal ' to the ' motor vehicles ' pronounced. "Yu Jianhua said.

Differences of measurement data of government departments and the academic and research institutions, said Yu Jianhua, academic research has different objectives in order of significance, has a different time and place, may be some differences in conclusions.

"This report says motor vehicle and waste incineration accounted for 4%, but also a research institution, said motor vehicle pollution accounted for 50%, we have a lot of argument. However, we must not lose sight of Peking University and Tsinghua University, including the Chinese Academy of Sciences and other academic institutions, their mainstream studies also mean, motor vehicle pollution in Beijing's air pollution than an integer between 20%. ”

Yu Jianhua said, each Research Institute's research has a different background and prerequisites, but motor vehicles for Beijing, a major source of pollution of the air, in the academic field was adequately established. (End text)

(Edit: SN091)
January 02, 2014 China News Network
(
官员:学术界证实机动车是北京空气主要污染源|污染源|机动车|环保局_新闻资讯

　　中新网北京1月2日电(记者 阚枫) “每个研究机构的研究有其不同的背景和前提条件，但是机动车为北京空气的一个主要污染源，应该说在学术领域还是得到充分证实的。”北京市环保局大气环境管理处处长于建华今日表示。

　　近日，中科院大气物理研究所的一份研究报告显示，北京PM2.5有6个重要来源，分别是土壤尘、燃煤、生物质燃烧、汽车尾气与垃圾焚烧、工业污染和二次无机气溶胶。其中，化石燃料燃烧排放成为北京PM2.5污染主要来源，汽车尾气所占比例不到4%。

　　根据这份报告，连日来，网络上围绕“北京PM2.5中汽车尾气占比不足4%”的讨论持续引发关注。

　　北京环保局2日召开新闻发布会，通报2013年北京空气质量状况。发布会上，针对上述争议，于建华接受中新网记者采访时回应称：“机动车污染还是北京较为主要的污染源。这不仅是我们通过模型解析的结果，也是污染物监测测算的结果。”

　　于建华介绍，根据北京市环保监测中心的研究结果，北京市的大气污染来源主要包括两大类，一类是本地排放来源，一类是外来传输来源，外来传输占到24.5%，其他75.5%为本地污染排放产生的。

　　“在本地污染源这75.5%中，机动车污染占比最大，占22.2%，其次是燃煤污染，占16.7%，工业污染占16.3%，扬尘污染占15.8%，其他方面占4.5%。此外，北京燃煤使用量在逐年消减，而机动车保有量在逐年上升，所以，从未来来看，北京的大气污染将逐渐从‘燃煤型’向‘机动车型’突出。”于建华说。

　　针对政府部门与学术研究机构测算数据的差异，于建华说，学术机构的研究有不同的研究目的意义，有不同的时间地点，可能在结论上有些差异。

　　“这份报告说机动车和垃圾焚烧占4%，但是也有研究机构说机动车污染占50%，大家有很多说法。但是，我们必须看到北大、清华，包括中科院等学术机构，他们主流的研究结果还是说，机动车污染在北京空气污染中占比在20%到30%之间。”

　　于建华说，每个研究机构的研究有其不同的背景和前提条件，但是机动车为北京空气的一个主要污染源，在学术领域还是得到充分证实的。(完)

赞