4/18/14, "The report had previously been classified as a state secret because of its sensitivity." BBC
-------------------------------------------------
4/17/14, "China Details Vast Extent of Soil Pollution," Wall St. Journal, Josh Chin and Brian Spegele, Beijing
"About a Fifth of Nation's Arable Land Is Contaminated With Heavy Metals."
"The extent of China's soil pollution, long guarded as a state secret, was laid out in an official report that confirmed deep-seated fears about contaminated farmland and the viability of the country's food supply.
Nearly one-fifth of the country's arable land is polluted, officials said in the report, shedding unexpected light on the scale of the problem—a legacy of China's three decades of breakneck economic growth and industrial expansion.
While China's problems with air pollution are well-documented, environmentalists have warned about the effects of less-visible contamination of the country's land.
The report, based on a seven-year survey covering 2.4 million square miles, found that about 16% of the country's soil and 19% of its arable land was polluted to one degree or another. The vast majority of the pollution came from inorganic sources such as heavy metals, it said. China's total land area is 3.7 million square miles.
The most common inorganic pollutants found in China's soil were the heavy metals cadmium, nickel and arsenic, according to Thursday's report. Cadmium and arsenic, both known to cause chronic health problems, are byproducts of mining.
Nearly 3% of arable land in China was found to be either moderately or seriously polluted, the report said, without defining what those levels of contamination mean. Pollution was particularly severe in eastern China's Yangtze River Delta, the Pearl River Delta in the south and old industrial zones in the northeast, it said.
Pollution of farmland is of particular concern in China because of how little of it has. According to the most recent national land survey, China had 334 million acres of arable land at the end of 2012, roughly 37 million acres above the government's "red line" for the amount of farmland necessary to feed the country's population.
Already, some 8.24 million acres of arable land has become unfit for farming, China's Ministry of Land and Resources disclosed in December. Environmentalists say the majority of the remaining land is of poor or moderate quality, having been stripped of its productivity by decades of heavy fertilizer and pesticide use.
So much polluted soil means China will likely have to begin importing more food. "China will need to ease pressure on its natural resource base and import more of its food over the long-term," said Fred Gale, an economist with the U.S. Department of Agriculture's Economic Research Service. "Agriculture is impacted by industrial pollution but also creates a lot of pollution itself," he said, citing waste and ecological damage caused by China's growing taste for meat.
Consuming cadmium in excess of the widely accepted standard of 0.4 milligrams per kilogram of rice over a long period can cause crippling pain the bones and liver and kidney damage. Several samples of the Hunan rice tested in 2013 showed levels of cadmium above that standard.
The cadmium disclosure came shortly after the Ministry of Environmental Protection rejected a request filed by a Beijing-based lawyer to release the results of the soil pollution survey. The ministry said at the time the data couldn't be released because it was a state secret.
Authorities have started to give more weight to the risks of environmental degradation.
"This is a primary step for citizens' right to know about the environmental protection issue," said Dong Zhengwei, the lawyer who pushed for release of the results. He added, "this information is late for the public, but it's still better than nothing."
Chen Nengchang, a soil remediation expert with the Guangdong Institute of Environmental and Soil Sciences, said the report "clears away the image of soil pollution as a state secret and provides more information." But he added that the release is "a gesture" that did little to provide solutions.
Soil remediation—a way of purifying and revitalizing land—is a technically demanding process that can take decades. Heavy metals react differently depending on conditions, making sources of pollution difficult to pinpoint, and efforts to leech them out of the soil can require years of letting fields lay fallow.
China committed to spending 30 billion yuan ($4.8 billion) on the clean up and prevention of soil pollution in its most recent five-year plan, though experts say they expect it would likely cost much more than that.
In Beijing, residents greeted the report with a dose of skepticism and resignation.
"I'm concerned, but I can't fix it. The whole country is the same. You have to eat or you'll starve," said Xiang Ju, a 29-year-old fruit vendor. He added that he thought the problem was probably more serious than the report indicated. "There must be places that haven't been investigated or reported."
Nan Li, a 26-year-old who works in information technology, said he was surprised by the figure but that it ultimately didn't matter whether the government released. "I mean, even if you want to avoid it, there's no way you'll always be able to," he said."
===========================
"The central government has promised to make tackling the
issue a top priority - but vested interests and lax enforcement of
regulations at local level make this challenging."...
4/18/14, "Report: One fifth of China's soil contaminated," BBC
"Almost a fifth of China's soil is contaminated, an official study released by the government has shown.
The report, by the Environmental Protection Ministry, named cadmium, nickel and arsenic as top pollutants.
There is growing concern, both from the government and the public, that China's rapid industrialisation is causing irreparable damage to its environment.
The study took samples across an area of 6.3 million square kilometres, two-thirds of China's land area.
"The survey showed that it is hard to be optimistic about the state of soil nationwide," the ministry said in a statement on its website.
"Due to long periods of extensive industrial development and high pollutant emissions, some regions have suffered deteriorating land quality and serious soil pollution."
Because of the "grim situation", the state would implement measures including a "soil pollution plan" and better legislation. Levels of pollution ranged from slight to severe.
About 82.8% of the polluted land was contaminated by inorganic materials, with levels noticeably higher than the previous survey between 1986 and 1990, Xinhua news agency quoted the report as saying.
"Pollution is severe in three major industrial zones, the Yangtze River Delta in east China, the Pearl River Delta in south China and the northeast corner that used to be a heavy industrial hub," the agency said.
The report had previously been classified as a state secret because of its sensitivity.
There is growing fear in China over the effect that modernisation has had on the country's air, water and soil.
The central government has promised to make tackling the issue a top priority - but vested interests and lax enforcement of regulations at local level make this challenging.
The public, meanwhile, have become increasingly vocal - both on the issue of smog and, in several cases, by taking to the streets to protest against the proposed construction of chemical plants in their cities."
.
No comments:
Post a Comment