Analise da intensificação da agricultura no Mato Grosso à partir de dados TRMM 3B42 e de series temporais MODIS/EVI

http://sbsr.dpi.inpe.br/col/dpi.inpe.br/sbsr@80/2008/11.17.17.41/doc/91-98.pdfInternational audienceThe Brazilian state of Mato Grosso (southern Amazonia) is one of the main national producer ofagricultural products such as soybean, cotton and corn. After having based its development on the expansion ofarable lands through deforestation for thrity years, the agricultural sector is now increasing its productivepotential through the adoption of new agricultural management practices such as double cropping systems.Remote sensing tehcniques such as classification of MODIS/TERRA EVI times series are efficient tools formonitoring this phenomena. It appears that double cropping systems with wo comercial crops (soybean and cornor soybean and cotton) improved from 6% to 26% of the total cultivated area in Mato Grosso between 2000-2001 and 2006-2007 harvests. However, when studying at a county level, those rates vary from 1 to more than50%, attesting that it exists a strong spatial variability concerning the application of this agricultural managementpractice. It is argued that this rate is in part drove by the importance of total agricultural areas in a place and bypluviometric conditions. This hypothesis is confirmed by crossing MODIS data with rainfall data. These data areissue from the TRMM 3B42 products, which are computed into parameters such as duration, onset, end of therain season and total annual rainfalls. Those parameters are found to explain 42% of the spatial variability of theapplication of double cropping systems in Mato Grosso