The People's Bank of China said in its second-quarter monetary report published on Wednesday that the current rising prices were not solely caused by accidental and temporary factors, adding that inflation risks were on the rise.

It warned that the price hikes of food products could spread to other consumer products. The report identified four reasons behind the increasing risk of inflation. It said prices for grain and meat products would not fall in the short term and uncertainties over the autumn harvest were aggravated by the ongoing drought.

Meanwhile, the demand for grain is increasing from both the public and the bio-fuel industry. The meat prices would probably continue to rise in the long term owing to the rising feeding costs and the short supply, which would not be replenished in the short term due to the breeding cycle of pigs, and the price hikes of meat could easily spread to other food products, the report said.

Prices of energy and resources are under pressure as the world petroleum price has climbed to an even higher level and the domestic pricing reform of resources and the country's environmental protection efforts would also push the prices higher, it said.