China's
toxic air pollution resembles nuclear winter, say scientists
Air
pollution now impeding photosynthesis and potentially wreaking havoc
on country's food supply, experts warn
26
Febraury, 2014
Chinese
scientists have warned that the country's toxic air pollution
is now so bad that it resembles a nuclear winter, slowing
photosynthesis in plants – and potentially wreaking havoc on the
country's food supply.
Beijing
and broad swaths of six northern provinces have spent the past week
blanketed in a dense pea-soup smog that is not expected to abate
until Thursday. Beijing's concentration of PM 2.5 particles – those
small enough to penetrate deep into the lungs and enter the
bloodstream – hit 505 micrograms per cubic metre on Tuesday night.
The World Health Organisation recommends a safe level of 25.
The
worsening air pollution has already exacted a significant economic
toll, grounding flights, closing highways and keeping tourists at
home. On Monday 11,200 people visited Beijing's Forbidden
City,
about a quarter of the site's average daily draw.
He
Dongxian, an associate professor at China
Agricultural University's
College of Water Resources and Civil Engineering, said new research
suggested that if the smog persists, Chinese agriculture will suffer
conditions "somewhat similar to a nuclear winter".
Buildings
in the central business district in Guangzhou seen through the thick
haze. Photograph: Alex Lee/Reuters
She
has demonstrated that air
pollutants adhere to greenhouse surfaces,
cutting the amount of light inside by about 50% and severely impeding
photosynthesis, the process by which plants convert light into
life-sustaining chemical energy.
She
tested the hypothesis by growing one group of chilli and tomato seeds
under artificial lab light, and another under a suburban Beijing
greenhouse. In the lab, the seeds sprouted in 20 days; in the
greenhouse, they took more than two months. "They
will be lucky to live at all,"
He told the South China
Morning Post newspaper.
She
warned that if smoggy conditions persist, the country's agricultural
production could be seriously affected. "Now almost every farm
is caught in a smog panic," she said.
A
farmer turns soil to plant crops near a state-owned lead smelter in
Tianying that has made much of the land uninhabitable. Photograph:
David Gray/Reuters/Corbis
Early
this month the Shanghai Academy of Social Sciences claimed in a
report that Beijing's pollution made the city almost "uninhabitable
for human beings".
The
Chinese government has repeatedly promised to address the problem,
but enforcement remains patchy. In October, Beijing introduced a
system of emergency measures if pollution levels remained hazardous
for three days in a row, including closing schools, shutting some
factories, and restricting the use of government cars.
People
visiting the Olympic Park amid the thick haze in Beijing. Photograph:
Kim Kyung-Hoon/Reuters
According
to China's state newswire Xinhua, 147 industrial companies in Beijing
have cut or suspended production. Yet
schools remained open
and government cars remained on the road.
One
person not put off by the smog was President Xi
Jinping,
who braved the pollution to make an unannounced visit to a trendy
neighbourhood popular with tourists.
Dressed
in a black jacket and trousers – and no facemask – Xi made a
brief walkabout in Nanluoguxiang district last Thursday morning. The
visit prompted approving coverage in Chinese news reports, but also
mockery on social media sites. "Xi Jinping visits Beijing's
Nanluoguxiang amid the smog: breathing together, sharing the fate,"
said a Xinhua headline.
Photos
and shaky video footage apparently of Xi's visit ricocheted around
Chinese social media sites. "Why isn't he wearing a facemask?"
asked one Sina
Weibo
user. "Isn't it bad for his health?"
This
week Chinese media reported that a man in Shijiazhuang, the capital
of Hebei province near Beijing, had sued the local environmental
protection bureau for failing to rein in the smog. Li Guixin filed
the lawsuit asking the municipal environment protection bureau
"perform its duty to control air pollution according to the
law", the Yanzhao Metropolis Daily reported.
Li
is also seeking compensation for the pollution. "Besides the
threat to our health, we've also suffered economic losses, and these
losses should be borne by the government and the environmental
departments because the government is the recipient of corporate
taxes, it is a beneficiary," he told the Yanzhao Metropolis
Daily.
Li's
lawyer, Wu Yufen, confirmed the lawsuit but refused to comment
because of the sensitivity of the case. He said: "This is the
first ever case of a citizen suing the government regarding the issue
of air pollution. We're waiting for the judicial authority's
response."
Diseased
vegetables said to be caused by pollution from a chemical plant.
Photograph: How Hwee Young/EPA
Li
told the newspaper that he had bought an air purifier, masks and a
treadmill, but none had helped him to overcome the pernicious health
effects of the smog. He is seeking RMB 10,000 (£1,000) in
compensation. "I want show every citizen that we are real
victims of this polluted air, which hurts us both from a health
perspective and economically," he said.
Li
Yan, a climate and energy expert at Greenpeace East Asia, said the
case could bring exposure to polluted cities outside of Beijing,
putting pressure on provincial officials to prioritise the problem.
She said: "People … who live in Beijing are suffering from the
polluted air, but we have the attention of both domestic and
international media. Shijiazhuang's environmental problems are far
more serious, and this case could bring Shijiazhuang the attention it
has deserved for a long time."
China smog sees face masks sell out
Beijing
pollution remains at unhealthy levels, sparking warnings to stay
inside and panic buying of masks and purifiers
26
February, 2014
China's
biggest online face mask sellers are running out of stock, with
consumers rushing to protect themselves against smog that has
shrouded swathes of northern China for an entire week.
Beijing's
official reading for PM 2.5 - small airborne particles which
easily penetrate the lungs and have been linked to hundreds of
thousands of premature deaths - stood at 486 micrograms per cubic
metre on Wednesday morning. The World Health Organization's
recommended safe limit is 25.
An
alternative measure by the US embassy in Beijing said PM 2.5
levels reached 557 in the city. In Xinji, in the neighbouring
province of Hebei, official Chinese statistics put the figure at
761, AFP news agency reported.
Beijing
government raised its four-tiered alert system to "orange"
for the first time last week,
after drawing public criticism for its initial ineffective
response. The warning system was unveiled in October last year.
The
choking smog
has seen anti-pollution product sales boom and online face mask
stores were struggling to meet demand.
Of
the 29 models of face masks provided by US industrial and
equipment supplier 3M's flagship store on Tmall.com, a
business-to-consumer shopping website, 26 were sold out or
unavailable on Wednesday.
The
Tmall outlet of Totobobo, which makes transparent, reusable masks
in Singapore, put up a notice saying new stocks would not be
available until April 1.
"I'm
looking for facemasks and an air purifier as the smog is getting
worse. And then I found masks were sold out and the price of air
purifiers is shooting up. Is everybody panicking?" complained
a user on Sina Weibo, a Chinese equivalent of Twitter.
Hazardous
environment
China's
pollution problems are further blamed
on rapid urbanisation, dramatic economic
development, increasing car use and climatic factors. Pollution
tends to worsen in winter.
A
pollution index reading above 300 is deemed "hazardous",
when everyone is advised to avoid outdoor activities.
"We
have been trying to stay at home as much as possible for days. The
pollution is really bad, and it affects our respiratory system. We
just don't go out unless we absolutely have to," said
62-year-old Wang Xinrui.
The
National Meteorological Centre has said the pollution is expected
to continue until Thursday
Lawsuit
over China's smog
Li
Guixin says he hopes to provide a 'wake-up call' to country's people
and leaders.
27
February, 2014
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