Análise espaço-temporal do uso de pivôs de irrigação em regiões agrícolas no estado de Mato Grosso

Abstract

The irrigation aimed at agricultural production has shown strong growth in recent years, and the center pivot irrigation system had a major expansion. This is due to some characteristics of this type of system, which show advantageous for farmers, such as saving hand labor and ease of operation. Another characteristic related to the central pivots is its circular shape, in order to facilitate their identification through satellite images or aerial images. In this context, the Remote Sensing shown an important tool to survey irrigated areas by center pivot, as it allows the quantitative analysis on the subject, due to the large availability of various sensor systems. This study purposed to quantify irrigated areas by center pivot in a period of 11 years (2004-2015) in three regions with emphasis on agricultural production in the state of Mato Grosso: North Medium, Parecis and Southeast. The stages of work comprised the definition of the areas of study, preparation of cartographic base, vectorization of center pivots identified in satellite images and finally the tabulation of the data. The results show that the Medium North region had an average growth rate of 10.96% of total irrigated area, the Southeast region 6.75% and 4.28% of the Parecis. Being the average annual growth for the three regions in relation to the pivot quantitative was approximately 8.07%, from a total 259 pivots in 2004 to 586 pivots in 2015.