Past decade above-ground biomass change comparisons from four multi-temporal global maps
Past decade above-ground biomass change comparisons from four multi-temporal global maps
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DOI：
10.1016/j.jag.2023.103274
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发表时间：
2023-04-04
影响因子：
7.5
通讯作者：
Hein, Lars
中科院分区：
文献类型：
--
作者：
Araza, Arnan;Herold, Martin;Hein, Lars
林地生物量（AGB）被认为是一个重要的气候变量，是我们关于森林在减缓气候变化方面作用的知识和信息的基础。近年来，卫星AGB和AGB变化（Delta AGB）产品的供应有所增加。在这里，我们评估了过去十年的净Delta AGB，这些AGB来自四个最近的全球多日期AGB图：ESA-CCI图，WRI-Flux模型，JPL时间序列和SMOS-LVOD时间序列。我们的评估探索和使用不同的参考数据源，在过去十年中重新测量生物量。参考数据包括国家森林资源清查（NFI）地块数据，机载激光雷达的当地Delta AGB地图，以及来自具有良好监测能力的国家的选定森林资源评估国家数据。在100米至25公里的空间尺度上进行了地图与参考数据的比较。比较结果表明，LiDAR数据与地图的比较最为合理，而使用NFI的比较仅在聚合水平上显示出一些一致性
Above-ground biomass (AGB) is considered an essential climate variable that underpins our knowledge and information about the role of forests in mitigating climate change. The availability of satellite-based AGB and AGB change (Delta AGB) products has increased in recent years. Here we assessed the past decade net Delta AGB derived from four recent global multi-date AGB maps: ESA-CCI maps, WRI-Flux model, JPL time series, and SMOS-LVOD time series. Our assessments explore and use different reference data sources with biomass re-measurements within the past decade. The reference data comprise National Forest Inventory (NFI) plot data, local Delta AGB maps from airborne LiDAR, and selected Forest Resource Assessment country data from countries with well-developed monitoring capacities. Map to reference data comparisons were performed at levels ranging from 100 m to 25 km spatial scale. The comparisons revealed that LiDAR data compared most reasonably with the maps, while the comparisons using NFI only showed some agreements at aggregation levels