Answering a China Daily question on whether the tainted land is still being farmed, Wang said no further planting will be allowed on it, as food safety is a top concern for governments at various levels.

Wang said he does not think there are any efficient and quick solutions to soil pollution, as the popular method of using plants to trap heavy metals in the soil usually takes more than a decade to work.

"One of the most practicable plans may be to replace crops with other plants such as trees," said Wang, head of the Institute of Environmental Engineering Technology at the Chinese Research Academy of Environmental Sciences.

About the broadcaster:

Anne Ruisi is an editor at China Daily online with more than 30 years of experience as a newspaper editor and reporter. She has worked at newspapers in the U.S., including The Birmingham News in Alabama and City Newspaper of Rochester, N.Y.

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