Resumo

DI LEO, Néstor C.; MONTICO, Sergio; BONEL, Beatriz A.  e  DENOIA, Julio A.. Estimation of APAR and NPP through remote sensing in three sectors of the Humid Pampa (Argentina). Cienc. docencia tecnol. [online]. 2007, n.35, pp.221-242. ISSN 1851-1716.

The photosynthetically active radiation (PAR) is important as energy input in diverse biological processes and its temporal evaluation has particular interest in crops monitoring. The data of spectral reflectance, obtained through remote sensors, are useful to provide observations of phenomena that are related to ecophysiological aspects of vegetal covers, including the net primary productivity (NPP). This one constitutes one of the few sources of information about the processes of the cycle of carbon in regional or global scales. The NPP is related to the efficiency of the use of light through the absorbed photosynthetically active radiation (APAR) and represents a useful agroecology indicator to value the productive use of the territory. The objective of this work is to present a methodological contribution to the agroecology through the characterization of the NPP and the APAR, in three geographic and productive situations in the Humid Pampa, Argentina.

Palavras-chave : Winter crops; Net primary productivity; Absorbed photosynthetically active radiation.

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