However, 70 X 104 km2 of grassland became sources of sand dust because of soil wind erosion, which account for 30.4% of all sand dust sources, and 38% of all grassland in China.

• 但有近75万km~2的草地发生风力侵蚀并为沙尘暴提供物质来源，占总物质来源地的30.；4%25，占全国草地面积的38%25。