Land desertification is the most serious eco-environmental problem in China,especially in the northwest region,which enlarges the area of desertified lands and intensifies sandstorms.

• 土地沙化是我国特别是西北地区当前最为严重的生态环境问题,不断加剧的沙尘暴与沙化土地的扩张更使生态环境问题雪上加霜。