China accounts for a fifth of the global population but only nine percent of its land. Demand for food is rising as incomes rise. The 50-year plan was mainly aimed at growing crops and raising pigs, the Hong Kong newspaper said, citing a statement from the Xinjiang Production and Construction Corps (XPCC). In 2009, China had a total of just over 2 million hectares of farming land abroad, the newspaper said, quoting an agriculture expert. A spokesman at the government-linked XPCC said he was not aware of the statement and did not immediately respond to a request from Reuters for confirmation of the report. China's overseas expansion in agriculture has raised some concern. In June, Australian politicians called for greater scrutiny over farm purchases by foreign buyers. Chinese investors bought up Australia's biggest cotton farm in 2012.