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The role of environmental land use conflicts in soil fertility: A study on the Uberaba River basin, Brazil

Valera, C.A. ; Valle Junior, R.F. ; Varandas, S.G.P. ; Sanches Fernandes, L.F. ; Pacheco, F.A.L.

The Science of the total environment, 2016-08, Vol.562, p.463-473 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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  • Título:
    The role of environmental land use conflicts in soil fertility: A study on the Uberaba River basin, Brazil
  • Autor: Valera, C.A. ; Valle Junior, R.F. ; Varandas, S.G.P. ; Sanches Fernandes, L.F. ; Pacheco, F.A.L.
  • Assuntos: Conservation measures ; Environmental degradation ; Freshwater ; Land use conflicts ; Nutrients ; Soil fertility ; Soil organic matter
  • É parte de: The Science of the total environment, 2016-08, Vol.562, p.463-473
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: In the Uberaba River basin (state of Minas Gerais, Brazil), pastures for livestock production have invaded areas of native vegetation (Cerrado biome), while already existing pastures were invaded by crop agriculture, with an expansion of sugar cane plantations in the most recent years. In some areas of the basin, these land use changes were classified as environmental land use conflicts because the new uses were not conforming to land capability, i.e. the soil's natural use. Where the areas in conflict became dense, some soil properties have changed significantly, namely the organic matter content and the exchangeable potassium concentration, which have decreased drastically (5kg/m3 per 10% increase in the conflict area) threatening the fertility of soil. Besides, these changes may have triggered a cascade of other environmental damages, specifically the increase of soil erosion and the degradation of water quality with negative impacts on aquatic biodiversity, related to a disruption of soil organic matter structural functions. Because half the Uberaba catchment has been considered is a state of accentuated environmental degradation, not only caused by environmental land use conflicts, conservation measures have been proposed and requested for immediate implementation across the watershed. [Display omitted] •Environmental Land Use Conflicts (ELUC) relate to uses that ignore soil capability.•ELUC may cause a decrease in soil's organic matter and exchangeable potassium.•ELUC disrupt soil functions triggering a cascade of environmental impacts.•Conservation measures may be used as tools to mitigate the impacts of ELUC.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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