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石灰岩土
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石灰岩土
Encyclopedia
农学
石灰岩土
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Limestone soils
石灰岩土
湿润热带、亚热带地区由碳酸盐岩(如纯质灰岩、硅质灰岩、泥灰岩、白云质灰岩、白云岩和石灰质白云岩等)经溶蚀风化堆积而形成的厚薄不等、钙饱和或含游离碳酸钙、岩性特征明显的土壤。属石质初育土亚纲。在中国土壤系统分类(2001)中,相当于黑色岩性均腐土、钙质湿润雏形土、钙质常湿雏形土、钙质湿润富铁土等;在美国土壤系统分类(2014)中,大致相当于黑色石灰软土[注]、湿润始成土[注];在联合国世界土壤资源参比基础(2014)中,大致相当于薄层土[注]、雏形土[注]。又称石灰土。
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