男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影

Beijing air gets 'better' but still lacks target

Updated: 2012-01-09 07:13

By Zheng Xin (China Daily)

  Comments() Print Mail Large Medium  Small

BEIJING - The amount of tiny particulate matter in the air detected in the capital has been decreasing in the past 10 years, according to the city's environmental protection regulator.

However, the average reading for PM2.5 (particulate matter smaller than 2.5 micrometers) - a major cause of harmful smog - in 2010 in Beijing, was still double the target of 35 micrograms a cubic meter (cu m) set by the Ministry of Environmental Protection.

"As a developing country, despite the government's efforts in promoting the city's air quality in the past 10 years, China still has a long and tough road to go to meet the public's expectations," said Yu Jianhua, director of the air pollution control division of the Beijing municipal environmental protection bureau.

The average annual PM2.5 density in the capital decreased from 100 to 110 micrograms a cu m in 2000 to 70 to 80 micrograms a cu m in 2010, according to data collected by the bureau from scientific and research institutes based in the capital.

The average annual density of PM2.5 in Shanghai was 44 to 53 micrograms a cu m from 2006 to 2010, according to the Shanghai government.

The Beijing municipal environmental monitoring center started collecting PM2.5 data five years ago for research purposes, but hasn't accumulated any official data so far.

"Based on academic dissertations we have collected so far, the capital has witnessed a decline in PM2.5 density," said Yu. "We will continue collecting and releasing more detailed data to the public in the near future."

"Due to the different locations of air monitoring stations, the readings for PM2.5 might vary a little bit," said Yu. "But the data we collected show a clear drop of PM2.5 density so far."

In response to the official's claim about the decline of PM2.5 density in recent years, some residents expressed doubt.

"I don't see any improvement in the air quality in the capital in the past few years with the number of motor vehicles soaring," said Wang Yu, 26, a Beijing resident.

Many cities in China face challenges in meeting standards for a stricter index for gauging air quality.

Wang Qiuxia, a researcher at Green Beagle, an environmental protection non-governmental organization based in the capital, said it was a step forward since the readings for the pollutants could ultimately help control emission of the pollutants, by acting as a warning.

According to the bureau, the city will continuously improve the air quality by cutting down automobile pollution, reducing industrial emissions and further cooperating with neighboring cities.

"There are less than 5 million motor vehicles in the city," said Yu. "In congested cities like Beijing, incomplete combustion of fuel would lead to a tremendous increase in the density of PM2.5."

The government will further raise vehicle emission standards and use more clean energy, according to the bureau.

"To improve the city's air is a task requiring cooperation," Du Shaozhong, deputy director of the bureau, told China Daily.

"We should collaborate with neighboring cities" to solve the problem, Du said.

主站蜘蛛池模板: 军事| 宁河县| 衡南县| 屯留县| 新安县| 永寿县| 云林县| 土默特左旗| 奉节县| 昌图县| 色达县| 赣榆县| 宕昌县| 资源县| 巩留县| 灵寿县| 延边| 舞钢市| 顺义区| 巴楚县| 江孜县| 资中县| 沂源县| 乌拉特后旗| 天门市| 淮阳县| 抚松县| 浦县| 三门县| 肇源县| 贡觉县| 慈溪市| 湟中县| 双流县| 中卫市| 永康市| 灌阳县| 改则县| 苏尼特右旗| 建平县| 长沙市| 左权县| 襄樊市| 门头沟区| 兰州市| 天镇县| 高清| 余姚市| 天门市| 弥勒县| 大埔区| 山阳县| 林甸县| 灵璧县| 汝阳县| 宁城县| 察雅县| 枞阳县| 宜良县| 昭觉县| 平乡县| 瑞金市| 宜川县| 博客| 共和县| 延边| 葫芦岛市| 平邑县| 郁南县| 平邑县| 明光市| 沭阳县| 万荣县| 鲁甸县| 岳西县| 晴隆县| 类乌齐县| 万载县| 固阳县| 巩留县| 绥棱县| 静海县|