本文从种类组成、种子数量、生态优势度、物种多样性、种子分布规律和物种相似性等方面比较了重庆市岩溶低山 10种不同土地利用系统的土壤种子库特点 ,10种土地利用类型包括耕地、弃耕地、果园、灌草坡、人工林和次生林。结果表明 ,研究区种子以草本为主 ,随土利用强度增加 ,种子类和数量减少 ,与地面农田杂草相似性增加 ,土壤种子库出质和量方面的锐减。从土壤种子库角度说明研究区生态退化严重。 The characteristics of soil seed bank in 10 different land use systems of karst low mountains in Chongqing were compared in terms of species composition, seed quantity, ecological dominance, species diversity, seed distribution and species similarity. Ten land use types including Cultivated land, abandoned farmland, orchard, shrub and grassland, plantation and secondary forest. The results showed that the main species in the study area was herbaceous plants. With the increase of soil utilization intensity, the seed types and numbers decreased, the similarity with ground weeds increased, and the quality and quantity of soil seed banks dropped sharply. From the perspective of soil seed bank, the study area is seriously degraded.