综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

Capital Beijing

Beijing air quality best in 10 years

By Qian Yanfeng (China Daily)
Updated: 2009-09-21 07:59

Beijing's air quality is still poor, despite improvements in recent years, a senior environment expert said.

Zhu Tong, a professor at Peking University who participated in Beijing's Olympic air quality panel last year, said residents in the city are prone to respiratory and cardiovascular diseases because of Beijing's poor air quality, although the harm has been mitigated over the years.

"Air quality has indeed improved greatly, if we compare it with that of 10 years ago. But there is definitely more to be done in order to ensure the health of the residents," he said.

Zhu was commenting on a government announcement that air quality in Beijing this year had been at its best level in a decade, as the city steps up pollution control measures ahead of the 60th anniversary of China.

Beijing air quality best in 10 years

Beijing recorded 214 "blue sky days", 82.3 percent of the total, from January to mid-September, 18 days more than the same period last year, the city's environmental authorities said.

This means it would only take an extra 46 blue sky days for the city to achieve its goal of 260 this year.

Beijing has a five-grade classification of air quality: a reading below 50 is "excellent"; from 51 to 100 "fairly good"; 101 to 200 "slightly polluted"; 201 to 300 "poor"; and more than 301 "hazardous". Days with excellent or fairly good air quality are counted as blue sky days.

Authorities attributed the improvement in air quality to the ban on high-polluting vehicles, the relocation of factories in downtown areas, and switching to new fuels like natural gas.

But Zhu said the current monitoring system for Beijing's air quality "cannot reflect the full picture."

"Some of the pollutants required in the international standards for tracking air quality haven't been covered here and the allowed pollutant concentration level in China is much higher," he said.

Zhu, however, commended the city's long-term initiative in constantly raising the emission standards of vehicles, blamed as the biggest contributor to Beijing's air pollution.

Beijing announced that it would upgrade its vehicle emission standard to Euro V in around 2012 to further cut tail gas and better air quality.

The standard, which has just been adopted in Europe, would be first imposed on new vehicle models in Beijing and then extended to all vehicles as authorities gradually retire older models that do not meet the standard.

"It's one good way of reducing emissions on the road, but the government also needs to make people drive less by relying on public transportation and switching to new-fuel vehicles," Zhu said.

(China Daily 09/21/2009 page18)

Copyright 1995 - 2009 . 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.
井研县| 仁化县| 布尔津县| 滦平县| 苍梧县| 蕲春县| 婺源县| 政和县| 德阳市| 南京市| 平度市| 福安市| 襄樊市| 白水县| 巨鹿县| 宕昌县| 东宁县| 建昌县| 赤峰市| 儋州市| 安泽县| 灌阳县| 杨浦区| 德安县| 鲁甸县| 苏尼特右旗| 财经| 大同市| 南部县| 闽侯县| 汉川市| 涞水县| 华阴市| 洞头县| 梅州市| 新绛县| 宜城市| 永善县| 芦溪县| 耿马| 甘谷县|