02741naa a2200349 a 450000100080000000500110000800800410001902400270006010000210008724501670010826000090027552017440028465000090202865000110203765000260204865000130207465000140208765000240210165000100212565000090213565000170214465300210216165300240218265300100220665300120221670000250222870000170225370000200227070000120229070000290230277300600233120779302017-11-17       2017    bl uuuu     u00u1 u    #d7 a10.1111/gcb.137082DOI1 aNOVAES, R. M. L.  aEstimating 20 year land use change and derived CO2 emissions associated to crops, pasture and forestry in Brazil and each of its 27 states.h[electronic resource]  c2017  aLand use change (LUC) in Brazil has important implications on global climate change, ecosystem services and biodiversity, and agricultural expansion plays a critical role in this process. Concerns over these issues have led to the need for estimating the magnitude and impacts associated to that, which are increasingly reported in the environmental assessment of products. Currently, there is an extensive debate on which methods are more appropriate for estimating LUC and related emissions and regionalized estimates are lacking for Brazil, which is a world leader in agricultural production (e.g. food, fibers and bioenergy). We developed a method for estimating scenarios of past 20-years LUC and derived CO2 emissions associated to 64 crops, pasture and forestry in Brazil as whole and in each of its 27 states, based on time-series statistics and in accordance with most used carbon-footprinting standards. The scenarios adopted provide a range between minimum and maximum rates of CO2 emissions from LUC according to different possibilities of land use transitions, which can have large impacts in the results. Specificities of Brazil, like multiple cropping and highly heterogeneous carbon stocks, are also addressed. The highest CO2 emissions rates are observed in the Amazon biome states and crops with the highest rates are those that have undergone expansion in this region. Some states and crops showing large agricultural areas have low emissions associated, especially in southern and eastern Brazil. Native carbon stocks and time of agricultural expansion are the most decisive factors to the patterns of emissions. Some implications on LUC estimation methods and standards and on agrienvironmental policies are discussed.  abeef  aBrazil  aLife cycle assessment  aSoybeans  aSugarcane  aDióxido de carbono  aMilho  aSoja  aUso da terra  aCana-de-açúcar  aCarbon footprinting  aMaize  aSoybean1 aPAZIANOTTO, R. A. A.1 aBRANDÃO, M.1 aALVES, B. J. R.1 aMAY, A.1 aMATSUURA, M. I. da S. F.  tGlobal Change Biologygv. 23, n. 9, p. 3716-3728, 2017.