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regosol n.【地質學;地理學】表面土,浮土。

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Purple soil classified as regosols in fao soil taxonomy and pup - cambols in china soil taxonomy , is one of well known soil types with the particularities such as weathering easily , high natural fertility , etc . , and feeding population of 500 / km2 . however , it often meets the water disasters ( sporadic flooding and serious seasonal drought ) 摘要紫色土是世界上一種特殊的土類,集中分布于四川盆地,以其易成土性和富鹽基性(自然肥力高)養育著500人以上平方公里的人口而著稱于世,但是它分布的區域存在嚴重的季節性干旱和時有發生的洪災等水問題。