The effect of intrinsic soil properties on soil quality assessments

Revista Brasileira de Ciência do Solo

Alessandro Samuel-rosa¹  Ricardo Simão Diniz Dalmolin¹  Pablo Miguel¹  Jovani Zalamena¹  Deborah Pinheiro Dick¹ 

关键词: soil quality;    family farms;    ANCOVA;    spurious correlation;    qualidade do solo;    agricultura familiar;    ANCOVA;    correlação espúria;   

DOI  :  10.1590/S0100-06832013000500013

来源: SciELO

【 摘 要 】

The assessment of soil quality is based on indicators and indices derived from soil properties. However, intrinsic soil properties may interfere with other soil properties that vary under different land uses and are used to calculate the indices. The aim of this study was to assess the extent to which intrinsic soil properties (clay and iron oxide contents) explain variable soil properties (sum of bases, potential acidity, organic carbon, total porosity, and bulk density) under different land uses (native forest, no-tillage and conventional agriculture) on small family farms in Southern Brazil. The results showed that the five properties evaluated can be included in soil quality assessments and are not influenced by the clay and iron oxide contents. It was concluded that for little weathered 1:1 and 2:1 phyllosilicate rich-soils, if the difference between the maximum and the minimum clay content under the different land uses is less than about 200 g kg-1 and the iron oxide content less than about 15 g kg-1, the physico-chemical soil properties in the surface layer are determined mostly by the land use.

【 授权许可】

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