The Moderate Resolution Imaging Spectroradiometer (MODIS) products are the most used in burned-area monitoring, on regional and global scales. This research aims to evaluate the accuracy of the MODIS burned-area and active-fire products to describe fire patterns in Brazil in the period 2001–2015. The accuracy analysis, in the year 2015, compared the MODIS products (MCD45/MCD64) and the burned areas extracted by the visual interpretation of the LANDSAT/Operational Land Imager (OLI) images from the confusion matrix. The accuracy analysis of the active-fire products (MOD14/MYD14) in the year 2015 used linear regression. We used the most accurate burned-area product (MCD64), in conjunction with environmental variables of land use and climate. The MCD45 product presented a high error of commission (>36.69%) and omission (>77.04%) for the whole country. The MCD64 product had fewer errors of omission (64.05%) compared with the MCD45 product, but increased errors of commission (45.85%). MCD64 data in 2001–2015 showed three fire domains in Brazil determined by the climatic pattern. Savanna and grassy areas in semi-humid zones are the most prone areas to fire, burning an average of 25% of their total area annually, with a fire return interval of 5–6 years.

中文翻译：

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MODIS 燃烧区域产品中巴西生物群落火灾的准确性和时空分布

中分辨率成像光谱仪 (MODIS) 产品最常用于区域和全球范围内的燃烧区域监测。本研究旨在评估 MODIS 燃烧面积和活动火灾产品的准确性，以描述 2001 年至 2015 年期间巴西的火灾模式。2015 年的精度分析比较了 MODIS 产品 (MCD45/MCD64) 和 LANDSAT/Operational Land Imager (OLI) 图像从混淆矩阵的视觉解释中提取的燃烧区域。2015年主动火力产品（MOD14/MYD14）的精度分析采用线性回归。我们使用了最准确的燃烧面积乘积 (MCD64)，并结合了土地利用和气候的环境变量。MCD45 产品的佣金（>36.69%）和遗漏（>77. 04%) 为全国。MCD64产品与MCD45产品相比遗漏错误较少（64.05%），但委托错误增加（45.85%）。2001-2015 年的 MCD64 数据显示巴西的三个火域由气候模式决定。半湿润地区的稀树草原和草地是最容易发生火灾的地区，平均每年燃烧总面积的 25%，火灾重现间隔为 5-6 年。