Estimación de la PPNA y la capacidad de carga por ambientes mediante información satelital en un establecimiento ganadero en la Pampa Deprimida

IRISARRI, J.G.N; GUNDEL, P.E.; CLAVIJO, M.P; DURANTE, M.; SOSA, P

Revista Argentina de Producción Animal

AAPA

Lugar: Balcarce; Año: 2013 vol. 33 p. 11 - 20

2314-324X

ANPP determines the carrying capacity of extensive cow-calf operation systems, like those of the Flooding Pampas. Management decisions are made at the landscape scale, where there is a limited knowledge of ANPP spatial and temporal variation. Relative novel satellite data, gave us the opportunity to describe monthly ANPP every 5.3 ha, in a 1000 ha area, for the 2000-2006 period. As a result, a 4 functional unit classification was obtained. ANPP varied between 6700 and 7600 kg DM ha-1 year-1, with an inter-annual variation between 12 and 19%. When precipitations were 25% less than average, ANPP decreased a 23%. On the other hand, when precipitations were 50% higher than average, ANPP increased only a 19%. With ANPP data, carrying capacity was estimated for each functional unit. Considering contrasting years of precipitation, the average variation was between 0,62 and 1,20 cows ha-1.