The researchers revised the potential extent of desertification in China by using climate data and biogeographical features. They found that desertification occurs in extremely arid, arid, semi-arid, and sub-humid areas. The revised potential extent of desertification in China is about 47.1% of the total terrestrial area, with different regions experiencing varying levels of desertification. The total potential extent of desertification increased after revision, with some areas decreasing while others increased.