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Pedosphere 2017年第4期27卷 747-757页

作者： Alba L.A.SKORUPA Sérgio H.G.SILVA Giovana c.POGGERE Diego TASSINARI leundro c.pinto Yuri L.ZINN Nilton cURI Departamento de ciéncia do Solo Universidade Federal de LavrasCampusLavras MG 37200-000Brazil

Soils result from the interaction of five independent formation *** one factor varies,while the others remain constant,different soils can be ***,we demonstrated an opposing trend,wherein two soils were similar,despite considerable differences in all factors of soil *** sampled two Inceptisols(Oxic Dystrudepts) formed on different parent materials(gneiss *** schist),climate(tropical altimontane ***,drier plateau),topography(1 650 m,45% slope vs.1 000 m,8% slope),time(rejuvenated ***,stable surface),and vegetation(rainforest *** savanna).The two soils had similar chemical properties,whereas the soil on mica schist had finer particle size distribution,lower porosity,and lower saturated hydraulic *** properties were related to a coarser blocky microstructure compared to the soil on *** soils presented active mineral weathering and pronounced pedoplasmation,demonstrated by clay contents>300 g kg^(-1),although only the Dystrudept on gneiss possessed coarse rock *** c horizons of both soils presented fragmented clay coatings suggestive of argilluviation,likely relict,because they were not observed in the B *** similarities in many properties of the two Dystrudepts,despite contrasting factors of soil formation,suggest converging evolution and that soil classification at the subgroup level was efficient in grouping similar formative processes in tropical ***,this work revealed that similar pedogenic processes acting on different factors of soil formation can result in similar soil properties,at least for Inceptisols where further soil development is hindered by topographic limitations.

关键词： mineral weathering, Oxic Dystrudept, pedogenic process, soil genesis, soil micromorphology, soil property, soil taxonomy

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