【摘要】 分析了阔叶树种马占相思、木荷、红锥和针叶树种杉木、加勒比松 5种纯林的土壤物理和化学性质。结果表明 :木荷林的土壤容重较小 ,土壤保水性特别好 ,但通气性较差。加勒比松林的土壤容重大 ,土壤毛管孔隙少 ,但非毛管孔隙多 ,因而土壤保水性差而通气性好。马占相思、红锥和杉木林的土壤容重较小 ,土壤的毛管孔隙和非毛管孔隙比例协调 ,故土壤保水性和通气性都比较好。各林分土壤呈强酸性 ,有机质含量中等 ,全P和有效养分缺乏。更多还原

【Abstract】 The physical and chemical characters of soil were studied in broadleaved Acacia mangium, Schima superba and Castanopsis hystrix stands and in coniferous Cunninghamia lanceolata and Pinus caribaea stands. Acacia mangium stands shows a relative small soil density, a good water preserving ability and a bad aeration ability, whereas Pinus caribaea stands shows a great soil density, a bad water preserving ability and a good aeration ability. The soils of Acacia mangium, Castanopsis hystrix and Cunninghamia lanceolata stands show a harmonizing relationship between capillary porosity and non-capillary porosity, so that their water preserving ability and aeration ability were good. All soils for these stands show a strong acidity and midium organic matter content. The total P and effect nutrients were generally lack for these stand soils.更多还原