CHINA HAS LONG been steadily losing farmland to urbanization, soil erosion and environmental degradation. Now authorities say 3.33 million hectares of the arable land the country still has are too polluted to grow crops. By way of comparison, that is an area almost equal to the size of Taiwan. Vice-minister for land and resource Wang Shiyuan says “tens of billions of yuan” is being thrown at pilot projects to rehabilitate contaminated land and water supplies tainted by the same source.
Officials are particularly concerned about toxic metals getting into the food chain. This Bystander has heard reports of rice being sold in Guangzhou that contains dangerous levels of cadmium. Once in the ground, such metals can persist for years, and government land surveys are still turning up traces of pesticides banned in the 1980s.
China is skirting the 120 million hectares of farmland considered to be the minimum needed to ensure the country’s food security. A newly released national land survey says the country’s arable land was down to 135.4 million hectares as of the end of 2012. The current five-year plan calls for more than 50 million hectares of new farmland to be created by 2020, so every little bit of reclaimed contaminated land helps.