CHINA. Gansu Province. Dunhuang. Tourists stand outside the entrance to Ming Sha Shan, a huge desert dune complex. Desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. 41 % of China's landmass in classified as arid or desert. Innapropriate farming methods and overcultivation have contributed to the spreading of deserts in China in recent years. The desert has even encroached upon the capital, Beijing, which is bombarded by sandstorms each spring.
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