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China's Acid Rain Control Strategy Offset By Increased Nitrogen Oxide Air Pollution

Date:
October 15, 2009
Source:
American Chemical Society
Summary:
Scientists are reporting the first evidence that China's sharp focus on reducing widespread damage to soil by acid rain by restricting sulfur dioxide air pollution may have an unexpected consequence: Gains from that pollution control program will be largely offset by increases in nitrogen emissions, which the country's current policy largely overlooks.

A new study urges China to take steps to reduce nitrogen emissions, which contribute to acid rain that can damage soil and plants like these trees.
Credit: Wikimedia Commons

Scientists are reporting the first evidence that China's sharp focus on reducing widespread damage to soil by acid rain by restricting sulfur dioxide air pollution may have an unexpected consequence: Gains from that pollution control program will be largely offset by increases in nitrogen emissions, which the country's current policy largely overlooks.

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The study, which suggests that government officials adapt to a more comprehensive pollution control strategy that includes a new emphasis on cutting nitrogen emissions, is scheduled for the Nov. 1 issue of ACS' Environmental Science & Technology.

Lei Duan and colleagues explain that China is trying to stop soil acidification by reducing sulfur dioxide pollution from electric power plant smokestacks. Those emissions cause acid rain, which in turn has made vast areas of farmland more acid and less productive. China's is striving for a 10 percent reduction in sulfur dioxide emissions by 2010, a policy that seems have had only a limited impact so far, the researchers say. However, China has paid little attention to pollution from nitrogen oxides, which also contribute to acid rain and soil contamination.

The scientists' analysis found that the benefits of sulfur dioxide reductions will almost be offset by increased nitrogen emissions. To control this problem, "China needs a multipollutant control strategy that integrates measures to reduce sulfur, nitrogen, and particulate matter," the article notes.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yu Zhao, Lei Duan, Jia Xing, Thorjorn Larssen, Chris P. Nielsen and Jiming Hao. Soil Acidification in China: Is Controlling SO2 Emissions Enough? Environmental Science & Technology, Nov. 1, 2009 [link]

Cite This Page:

American Chemical Society. "China's Acid Rain Control Strategy Offset By Increased Nitrogen Oxide Air Pollution." ScienceDaily. ScienceDaily, 15 October 2009. <www.sciencedaily.com/releases/2009/10/091014122054.htm>.
American Chemical Society. (2009, October 15). China's Acid Rain Control Strategy Offset By Increased Nitrogen Oxide Air Pollution. ScienceDaily. Retrieved February 1, 2015 from www.sciencedaily.com/releases/2009/10/091014122054.htm
American Chemical Society. "China's Acid Rain Control Strategy Offset By Increased Nitrogen Oxide Air Pollution." ScienceDaily. www.sciencedaily.com/releases/2009/10/091014122054.htm (accessed February 1, 2015).

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