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Intensive farming and grazing on Oxisols of the Brazilian savannas (also known as the Cerrados) are leading to loss of soil organic matter (SOM) and consequently to a decline in fertility and sustainability of the soils. Alternative land-use systems such as the introduction of legumes in pastures...


Fuhrmann, SNeudelft, HWesterhof, RAyarza, Miguel AngelSilva, J.E. daZech, W.[Soil organic carbon, carbohydrates, amino sugars, and potentially mineralizable nitrogen under different land-use systems in oxisols of the Brazilian cerrados]Soil organic carbon, carbohydrates, amino sugars, and potentially mineralizable nitrogen under different land-use systems in oxisols of the Brazilian cerrados

In the Brazilian savannas, or Cerrados the rapid advance in agriculture and cattle ranching is affecting soils through, for example, accelerated erosion and depletion of soil organic matter (SOM). Changes in soil microbial biomass are good indicators of changes in SOM. We therefore assessed the e...


Renz, TENeufeldt, HenryAyarza, Miguel AngelResck, DVSZech, W.[Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados]Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados

Short-term changes in soil aggregation, total and particulate organic C and N were studied in cropping and pasture systems of the Brazilian savannas, also known as the Cerrados. Furthermore, the concepts of a hierarchical aggregate structure and of the interaction of soil structure with particula...


Freibauer, A.Westerhof, RAyarza, Miguel AngelSilva, J.E. daZech, W.[Short-term variation in aggregation and particulate organic matter under crops and pastures]Short-term variation in aggregation and particulate organic matter under crops and pastures

Soil organic matter quality is usually seen as a major attribute of soil quality. In this study, we extracted organic carbon with water (WEOC) or with potassium permanganate (PEOC). We assessed these extractions for their potential as sensitive indicators of the effect of land use on two importan...


Westerhof, RVilela, LAyarza, Miguel AngelZech, W.[Carbon fractions as sensitive indicators of quality of soil organic matter]Carbon fractions as sensitive indicators of quality of soil organic matter
Guggenberger, GZech, W.Thomas, Richard J.[Alteración de la lignina y de los carbohidratos en los agregados de un oxisol, en pastizales tropicales derivados de la sabana nativa]Alteración de la lignina y de los carbohidratos en los agregados de un oxisol, en pastizales tropicales derivados de la sabana nativa

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