Land use in China
China has four times the population of the U.S., within roughly the same area. With 1.3 billion inhabitants, 20% of the world’s population lives in China. While the rate of population growth has been declining for decades, the total number of inhabitants has been growing and is expected to do so through 2030. China’s urban population is growing rapidly; between 1950 and 2009, the percentage of the population living in urban areas quadrupled from 14% to 48%. Meanwhile, the rural population is declining, opening the landscape in areas that are not urbanized. The forests and farming land of eastern China support far more people and major cities than do the grasslands, deserts, and high mountain regions of the west.
One-child policy
Since the citizens of China are living longer and having fewer children, the growth of the population imbalance is expected to continue, as reported by the Canadian Broadcasting Corporation which referred to a United Nations projections forecast that "China will lose 67million working-age people by 2030, while simultaneously doubling the number of elderly. That could put immense pressure on the economy and government resources." The longer term outlook is also pessimistic, based on an estimate by the Chinese Academy of Social Sciences, revealed by Cai Fang, deputy director. "By 2050, one-third of the country will be aged 60 years or older, and there will be fewer workers supporting each retired person."