Land management and ownership are pressing issues as China strives for efficient, inclusive and sustainable urbanization, a study by the country's major think tank and the World Bank showed on Tuesday.

So much agricultural land was used to expand urban areas that the amount available to farm has dropped to the "red line" minimum to ensure China's food security, Sri Mulyani Indrawati, managing director and chief operating officer of the World Bank, said.

According to the report, released jointly by China's Development Research Center and the World Bank, there are major tasks facing the country in the new urbanization process, with land reform top of the agenda.