02207nam a2200265 a 450000100080000000500110000800800410001910000250006024500920008526002720017750000130044952012410046265000110170365000210171465000240173565000120175965000120177170000220178370000210180570000220182670000320184870000230188070000200190370000180192321594252023-12-11       2023    bl uuuu     u00u1 u    #d1 aFREITAS, A. C. R. de  aCarbon footprint in integrated systems in the Brazilian Cerrado.h[electronic resource]  aIn: INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 4., CONGRESSO BRASILEIRO DE SISTEMAS INTEGRADOS DE PRODUÇÃO AGROPECUÁRIA, 3., ENCONTRO DE SISTEMAS INTEGRADOS DE PRODUÇÃO AGROPECUÁRIA NO SUL DO BRASIL, 7., Bento Gonçalves, 2023. Anais...c2023  aIV ICLS.  aABSTRACT - The prediction of soil organic carbon (SOC) stocks, enteric emissions and beef production is required for planning of low-carbon management practices in livestock systems. The use of mechanistic modeling is well-suited for this purpose, but it still represents a knowledge gap in Brazil. The objective of this study was to investigate the use of the Manure-DNDC model to simulate SOC and to estimate the CO2eq emission intensity of beef produced at two sites in the Cerrado biome, which adopted crop-livestock integrated system. There was a good agreement between measured and estimated C stock data from both sites, suggesting a good performance of Manure-DNDC model. At the EMBRAPA site, the emission intensity for integrated crop-livestock (ICL) was 10 kgCO2eq.kgBeef-¹ , 10% higher than of integrated crop-livestock-forestry (ICLF22 and ICLF14) systems. At the TRIJUNCAO site, emission intensity was 9 kgCO2eq.kgBeef-¹ for Low Carbon Brazilian Beef (LCBB) system, which was similar with Management Farm (MF). The predictions of the Manure-DNDC model satisfactorily predicted GHG emissions and capture for the Cerrado condition, whose results pointed out to the potential of integrated systems to mitigate GHG emissions.  aCarbon  aGreenhouse gases  aSoil organic carbon  aCarbono  aCerrado1 aALMEIDA, R. G. de1 aMACEDO, M. C. M.1 aSANTOS, F. C. dos1 aALBUQUERQUE FILHO, M. R. de1 aSILVEIRA, M. C. T.1 aALVES, B. J. R.1 aMADARI, B. E.