Fire is an integral part of Earth’s system that links regional and global biogeochemical cycles, human activities, and ecosystems. Global estimates for biomass burning indicate that Africa is responsible for ~70% of global burned area and ~50% of fire-related carbon emissions. Previous studies have documented an overall decline in burned area in the African continent, but changes in fire patterns, such as the frequency and size of different fire categories, have not been assessed. In this study, long-term fire trends were investigated using the latest burned area data from the MODerate resolution Imaging Spectroradiometer (MODIS) and the Global Fire Emission Database (GFED4s) over Central Africa (10°E–40°E, 15°N–15°S). A 3D (latitude, longitude, time) connected-component labeling algorithm was applied to identify individual fires and their sizes. The results show a decline in burned area by 2.7–3.2 Mha yr −1 (~1.3% yr −1 ) for the period 2003–2017, particularl...

中文翻译：

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观察到中部非洲地区火势的变化和可能的驱动因素

火是地球系统不可或缺的一部分，它将区域和全球生物地球化学循环，人类活动和生态系统联系在一起。全球对生物质燃烧的估计表明，非洲约占全球燃烧面积的70％和与火有关的碳排放量的约50％。先前的研究记录了非洲大陆燃烧面积的总体下降，但是未评估火灾类型的变化，例如不同火灾类别的频率和大小。在这项研究中，我们使用中分辨率非洲地区（10°E–40°E，15°N –15°S）。使用3D（纬度，经度，时间）连接组件标记算法来识别单个火灾及其大小。