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China 'winning' war on smog, helping life expectancy: study

AFP  |  Beijign 

- appears to be "winning" its war on air pollution, making so much that could rise by more than two years, according to a US university study.

The has been waging a battle to clear its skies of smog that has cut in some regions and prompted its citizens to buy masks and air purifiers to protect themselves during peak days.

says in its study released yesterday that while the world's biggest polluter faces a long road to reach national and international air quality standards, the results "suggest the country is winning its war on pollution".

Based on daily data from more than 200 monitors across from 2013 to 2017, the analysis found that cities have cut levels of PM 2.5 -- the tiny airborne particles considered most harmful to health -- by an average of 32 percent in just four years.

If sustained, such reductions would increase the of the average Chinese citizen by 2.4 years relative to 2013. PM 2.5 can play a role in heart disease, stroke, and lung ailments such as emphysema and cancer.

Another study published by the university last year had found that in northern had cut by three years compared with the south of the country.

"We don't have a historical example of a country achieving such rapid reductions in It's remarkable," the of the at who conducted the studies, told AFP Tuesday.

By contrast, it took the US a dozen years and a severe recession to attain similar improvements in air quality after it enacted its 1970 Clean Air Act, he noted.

"What these last four years have demonstrated quite loudly is that things can change and they can change rapidly -- it just requires political will," he said.

As public discontent mounted over the country's choking smog, China's ruling made clean air a priority.

In 2013, it launched an ambitious action plan that sought to slash PM 2.5 levels in key regions such as the northern Beijing-Hebei-area and the by up to a quarter.

In 2014, Chinese declared "war" on

Since then, teams of inspectors have been deployed across major cities in north to ensure compliance with standards.

Highlighting the challenge facing the country, Beijing's skies were a dismal grey on Tuesday, as PM 2.5 levels soared to 270 micrograms per cubic cubic metre, more than 10 times the maximum recommended by the for a 24-hour period.

But the capital and other places have made


cut PM 2.5 levels by 35 percent between 2013 and 2017, increasing lifespans of its 20 million residents by 3.3 years, the study found. Baoding, China's most polluted city as of 2015, cut by 38 percent, adding 4.5 years of life.

"China's not held up as a democratic regime, and yet here we have a clear example of the public demanding something and the government delivering it," said Greenstone.

Yet the war on smog has come with social costs.

To clear the skies, authorities ordered thousands of polluting factories to leave urban centres, displacing hundreds of thousands of migrants.

They also designated "no-coal zones" that pushed more than three million households in the region around to abruptly switch over to gas or electric heating, often removing coal boilers before new systems were functional.

In December, schools in province made headlines after pupils suffered frostbite from attending class outside. Delays to installations of the new meant it was slightly warmer in the weak winter sunshine than in the frigid classrooms.

Greenstone said he hoped to see move towards more market-based environmental regulations. He recommended measures such as setting up cap-and-trade markets for particulates and beefing up taxes.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Tue, March 13 2018. 13:05 IST
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