Avaliação dos impactos ambientais de plantações de eucalipto no Cerrado com base na análise comparativa do ciclo hidrológico e da sustentabilidade da paisagem em duas bacias de segunda ordem / Evaluation of the environmental impacts of eucalyptus plantations in the Cerrado region based on the comparative analyses of the water cycle and landscape sustainability in two small catchments

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The present study aims to contribute to the analysis of the environmental impact of eucalypt plantations in the Cerrado region of the southern part of the State of Goiás, Brazil. The analysis were based on the methodology of the General Theory of the Systems and also on the results of hydrologic monitoring of two experimental catchments, which included groundwater monitoring, and the cartographic analysis of the environmental fragility. The monitoring results show higher average values of streamflow for the eucalypt catchment, associated with a more rapid and concentrated stormflow response, even though the beginning of the rising limb was delayed, probably due to the rainfall interception by the eucalypt canopy. Based on the analyzed water quality parameters, it can be concluded that the Cerrado catchment presented slightly better values, which were confirmed by the comparativy analysis of the benthonic macroinvertebrates. The inclusion of the identification of the riparian areas of the catchments as one of the thematic maps of the integrated analysis of the landscape fragility revealed to be very pertinent for the planning of the sustainable management of forest plantations and for the correct evaluation of the associated environmental impacts.

ASSUNTO(S)

bacia hidrográfica environmental impact landscape eucalipto eucalypt experimental catchment paisagem impacto ambiental

Documentos Relacionados