ABSTRACT

The objective was to compare the evapotranspiration of cotton (Gossypium sp. L.) estimated by the SEBAL model and the FAO-56 method, throughout the phenological cycle of the plant on eight fields located in the upper area of the Rio das Mortes basin, State of Mato Grosso – Brazil. Images from the Landsat 8 satellite were used under the Geographic Information Systems environment through the capabilities of the QGIS 3.6.2 and GRASS 7.6.1 software. The reference evapotranspiration was determined by the FAO Penman-Monteith method implementing the Ref-ET software and data from the Campo Verde meteorological station of INMET - Brazil. The R software was applied to the statistical analyses of correlation and regression. The data set of the available stages of the cotton phenological cycle shows a strong positive correlation, with approximately 68% of the evapotranspiration variation of the SEBAL model related to the estimates of the FAO-56 method.

摘要

目的是比较棉花（棉）的蒸散量。sp。L.）由SEBAL模型和FAO-56方法估算，在整个植物物候周期中，位于巴西马托格罗索州里约达斯莫特斯盆地上部地区的八个田地上。通过QGIS 3.6.2和GRASS 7.6.1软件的功能，在地理信息系统环境下使用了来自Landsat 8卫星的图像。参考蒸散量是通过采用Ref-ET软件的FAO Penman-Monteith方法和来自巴西INMET的Campo Verde气象站的数据确定的。将R软件应用于相关性和回归的统计分析。棉花物候周期可利用阶段的数据集显示出很强的正相关性，