The landuse database of Bachu County in Xinjiang Uygur Autonomous Region are obtained from remote sensing images of two periods by using the interpretation method combined with correlated census data for correction.Results show that cropland in Bachu County has continuously expanded since 2004 and the reclaimed land gradually spreads into forestland and grassland.Land reclamation damages the shelter forest system that protects the ecological safety of oasis,aggravates land desertification trend,and threatens local biodiversity.Meanwhile,large-scale farmland reclamation exacerbates water shortage.