Beijing Environmental Protection Agency says the American embassy PM2.5 data

Beijing Environmental Protection Agency says the American embassy PM2.5 data obtain unstandardly
PM2.5 monitoring point be increased to more than 30

Environmental protection takes measures to plant trees by the expressway the motor vehicle is discharged and risen to this year " Country five "

New the intersection of scene and sentence this spend on, can't be more suitable at the air quality of Beijing is monitored this year New Year. Before the Spring Festival, the monitoring center in environment protecting mode of the city announced the research monitoring data of PM2.5; This year, this city will manage PM2.5, the monitoring point will be increased to more than 30 finally; Since the second half year, will carry out motor vehicle's country's five standard; There the main perimeter of main road in the city kind is had and planted green Yesterday, the relevant person in charge of Municipal Environmental Protection Agency acted as a guest the city was in charge of radio, delineated out a view in environment protecting mode for citizens.

16 counties have PM2.5 monitoring point

Before the Spring Festival, the monitoring center in environment protecting mode of the city released PM2.5 studying monitoring data. Yesterday, the atmospheric environment Yu JianHua, division chief of management office of Municipal Environmental Protection Agency introduced, country's new air quality criteria has not been issued yet, so studying monitoring can not comment on air quality normally, " Has only released PM2.5 density of a point at present, in order to for citizen's reference, can't represent the situation in the whole city. "

PM2.5 that Municipal Environmental Protection Agency is constructing the whole city monitors the network, will utilize existing equipment at first, presume 6 monitoring points, it will set up combining in Beijing, transmission characteristic of the leeward, give consideration to the function district to plan, set up a point to release PM2.5 real-time data of a point. In the future, will build up more than 30 monitoring points in 16 counties. At present, 27 monitor son's station in this city, according to planning, these sons stand and all start and monitor PM2.5 successively. This means, this city will increase 3 monitoring points at least.

The distribution of the monitoring point, " According to the intersection of national standard and overall arrangement, from 50 of pollution sources, but will never set up in the desolate and uninhabited place. " Yu JianHua says.

The motor vehicle is discharged to rise in the second half year " Country five "

From 1998 years ago, this city has taken many kinds of emission reduction measures to every pollutant, all in all, every air pollutant density drops obviously. But why are citizens still a bit unsatisfied with air quality? The disposal of pollutants overall control place Joe of Municipal Environmental Protection Agency analyzes purely and sweet-smellingly: " The basic reason or total emission of pollutant exceeds the environmental capacity, so should also continue energetical emission reduction. "

The exhaust of motor vehicle " Contribute " Inhalable particles,last exhaust. For this reason, this city will take the lead in carrying out stricter motor vehicle's country's five discharge standard in the whole country in the second half year, and offer five oil to the country, these two major actions will play an important role to the emission reduction of pollutant.

Plan to plant trees by the expressway

Not only the ornamental city of green plants, the more important thing is it can play a role in improving air quality. Qiao ShuFang introduces, the municipal government plans to plant trees 13333.333 hectares this year. Yu JianHua says, it needs to look for the ground child at first to plant trees; Besides the plain area, will also combine the serious place of pollutant such as expressway or main perimeter of main road in the urban area, may all plant the green plants. In addition, there are two pollutant of Beijing transmits passways, including southeast direction and southwest direction, so, here " The passway " Kind will be had and planted green too in the perimeter.

Dispel suspicion

Why morning is the pollutant tall in density?

New Year's Eve, city in environment protecting mode the intersection of PM2.5 and density rise violently to 1593 microgram each for a time, the fifth day pm 9 about instantaneous density of PM2.5 once " Explode the table " . Explain building China, it really influences PM2.5 density to set off the fireworks firecracker, reach the high value in the twinkling of an eye, but the air quality of appraising one day should not use a certain period, value of a certain point as basis, " Should regard the average density values of 24 hours as and appraise basis, this is international current convention, but not as we that citizens think draw the density of low PM2.5 on purpose. "

Yu JianHua says, so far as 24 hours of a whole day, there is the air quality of Beijing " One pair of valleys of split-blip " Change law. Generally speaking, in the emission, discharge the situation relatively stable in intensity, it is relatively high to pollute the density in the morning; After 10 o'clock, as the sun rises slowly, heats the temperature of ground gradually, the ground air heated rises, the atmosphere will make and widen very much, so air quality is better from noon to afternoon; After nightfall, because the ground begins to dispel the heat, the ground begins to become cool, the air begins from having compressing down again, so the density becomes relatively high in nightfall; After night, with the reduction of the artificial activity, the pollutant density is reduced again.

Why are American embassy data inconsistent with Environmental Protection Agency?

Citizens propose " American data of embassy what inconsistent with data which Municipal Environmental Protection Agency release" ,Explain building China, at first, depends on whether there is a laboratory that is serving it behind this monitoring data, " The laboratory is the guarantee that the air quality data are released, such jobs as the instrument regulates need to be maintained by professional personnel, otherwise produce the disparity greatly. " Secondly, according to international practice, monitoring point should from 50 of pollution sources, but American monitoring position of embassy is set up at the roadside, relatively close to the pollution sources, it is unstandard to set up. In addition, even if in the locality of U.S.A., regard average data for 24 hours as the appraisal basis of the makings quantity of the whole sky, but not the data of every hour.

Author: Wang Ping


Beijing Environmental Protection Agency says the American embassy PM2.5 data obtain unstandardly