The shut-down plan includes a number of small thermal power plants with a combined output of 13 gigawatts, steel plants with a total capacity of 6 million tons, cement plants with a combined output of 50 million tons, iron production facilities with a total capacity of 14 million tons, and papermaking factories producing a combined 1 million tons.

"If achieved by the end of this year, the plan will help China reduce its emissions of SO2 by 600,000 tons and cut the COD by 400,000 tons," Zhou said.

Key eco-friendly projects will also be implemented, Zhou said.

The country's urban wastewater treatment capacity is to be increased by 12 million tons a day, which will cut COD by 600,000 tons.

In addition, industries will be required to strengthen their wastewater treatment capacities and will be expected to decrease COD by 200,000 tons a year.

Measures taken by the central government and environmental agencies last year also saw progress being made in the green battle.

The density of COD in water resources was 6.5 milligram per liter, down 7 percent on 2006.

A reduction in SO2 emissions also saw the area of

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