%0 Conference Proceedings
%4 sid.inpe.br/marte2/2017/10.27.15.47.15
%2 sid.inpe.br/marte2/2017/10.27.15.47.16
%@isbn 978-85-17-00088-1
%F 59350
%T Variações do CWSI para pastagem em bom estado de conservação, em degradação e degradad
%D 2017
%A Linhares, Mayklyns Marcos de Almeida,
%A Oro, Oscar Ivan De,
%A Cabral, Escleide Gomes,
%@electronicmailaddress geoscar1988@gmail.com
%E Gherardi, Douglas Francisco Marcolino,
%E Aragão, Luiz Eduardo Oliveira e Cruz de,
%B Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)
%C Santos
%8 28-31 maio 2017
%I Instituto Nacional de Pesquisas Espaciais (INPE)
%J São José dos Campos
%P 6415-6422
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais (INPE)
%X This article aims to compare the behavior of three grassland conservation levels regarding the interaction of the plant with water. A case study was conducted in an area of 50 km² in the state of Mato Grosso, Brazil where the pasture is much of the vegetation cover. Three years were observed: 2013, 2014 and 2015. The interpretation of pasture and water relationship was by the Crop Water Stress Index (CWSI) that is based on the ratio of real by reference evapotranspiration. The real evapotranspiration was calculated using the SEBAL (Surface Energy Balance Algorithm for Land) with the aid of satellite images and data from a weather station. The reference evapotranspiration was calculated by Penman-Monteith method. In the study area three points were known as being conserved pasture, agronomic degraded pasture and biologically degraded pasture. These points were used to understand the behavior of pasture at different levels regarding the relationship of the plant with water. The results show that the highest water deficit was found to the biologically degraded pasture followed by agronomic degraded pasture and conserved pasture. The pasture behavior observed in this study is agree with the expected based on literature and indicates that it is likely that there is a greater resilience on the part of the pasture more preserved fact that which reverses as the worsening degradation. This study also indicates that the CSWI can represent a good choice for a qualitative evaluation of the pasture.
%9 Meteorologia e climatologia
%@language pt
%3 59350.pdf