oficina de educação ambiental

Anais XVI Simpósio Brasileiro de Sensoriamento Remoto - SBSR, Foz do Iguaçu, PR, Brasil, 13 a 18 de abril de 2013, INPE

Análise do comportamento de NDVI e NDWI para a cultura da soja no município de
Tupanciretã-RS nas safras de 2000-2001 e 2004-2005
Andersson Rodrigues Peter 1.
Anderson Luis Ruhoff 1
1

Universidade Federal do Rio Grande - FURG
Avenida Itália, Km Nº 8 Campus Carreiros - 96203-900 - Rio Grande - RS, Brasil [e-mail] [e-mail]
Abstract: In extreme meteorological events such as the drought, the spectral response of vegetation is presented in a differentiate way. These differences can be noticed by the rates of vegetation. In this context, the study had the objective analyze the behavior of the Normalized Difference Vegetation Index (NDVI) and Normalized
Difference Water Index (NDWI) of soya culture in the municipality of Tupanciretã (Estate of Rio Grande do
Sul-Brazil), in distinct periods of crop: with normal precipitation occurrence (2000-2001), and with drought occurrence (2004-2005). The maps generated allowed observe areas most affected, can be utilized for planning of immediate actions in future events, in order of minimization impacts caused by drought anomalies. The results of the rates of vegetation could be matched with the data of agricultural production from the Brazilian Institute of Geography and Statistics (IBGE), demonstrating that the responsible organs are unprepared to deal with events of this magnitude, considering that the performance dramatically decreased in the crop that occurred the drought. Key-words: vegetation index; soya culture; drought anomalies; crop production.

1. Introdução
A soja, atualmente, se apresenta como uma das culturas de maior relevância para a economia do Brasil. Sua primeira expansão ocorreu na região sul do país, em meados dos anos 1960, devido às condições climáticas favoráveis. Posteriormente, a partir de novas tecnologias, foi adaptada a