INALI 02622
INSTITUTO NACIONAL DE LIMNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
The effects of deforestation and climate variability on the streamflow of the Araguaia River, Brazil
Autor/es:
MICHAEL T. COE; EDGARDO M. LATRUBESSE; MANOEL E. FERREIRA; MARIO L. AMSLER
Revista:
BIOGEOCHEMISTRY
Editorial:
SPRINGER
Referencias:
Año: 2011
ISSN:
0168-2563
Resumen:
Abstract. Deforestation changes the hydrological,geomorphological, and biochemical states of streamsby decreasing evapotranspiration on the land surfaceand increasing runoff, river discharge, erosion andsediment fluxes from the land surface. Deforestationhas removed about 55% of the native vegetation andsignificantly altered the hydrological and morphologicalcharacteristics of an 82,632 km2 watershed of theAraguaia River in east-central Brazil. Observeddischarge increased by 25% from the 1970s to the1990s and computer simulations suggest that about2/3 of the increase is from deforestation, the remaining1/3 from climate variability. Changes of this scaleare likely occurring throughout the 2,000,000 km2savannah region of central Brazil.
