Global maps of twenty-first century forest carbon fluxes
Global maps of twenty-first century forest carbon fluxes
复制标题
DOI：
10.1038/s41558-020-00976-6
复制
发表时间：
2021-01-21
影响因子：
30.7
通讯作者：
Tyukavina, Alexandra
中科院分区：
文献类型：
--
作者：
Harris, Nancy L.;Gibbs, David A.;Tyukavina, Alexandra
为减缓气候变化而管理森林需要不同利益攸关方采取行动，开展目标和空间影响相互重叠的不同活动。迄今为止，已使用各种数据、方法和假设为不同区域开发了若干森林碳监测系统，因此难以在不同尺度上一致地评估减缓绩效。在这里，我们整合了地面和地球观测数据，以30米的空间分辨率绘制了2001-2019年全球与森林相关的年度温室气体排放和清除。我们估计，全球森林是一个净碳汇，为-7.6 +/- 49 GtCO（2）e-yr（-1），反映了总碳清除量（-15.6 +/- 49 GtCO（2）e-yr（-1））与毁林和其他干扰造成的总排放量（8.1 +/- 2.5 GtCO（2）e-yr（-1））之间的平衡。这里介绍的地理空间监测框架支持气候政策的制定，促进在确定优先事项方面的一致性和透明度，并跟踪在实现具体森林的气候减缓目标方面取得的集体进展，同时兼顾地方细节和全球一致性。
Managing forests for climate change mitigation requires action by diverse stakeholders undertaking different activities with overlapping objectives and spatial impacts. To date, several forest carbon monitoring systems have been developed for different regions using various data, methods and assumptions, making it difficult to evaluate mitigation performance consistently across scales. Here, we integrate ground and Earth observation data to map annual forest-related greenhouse gas emissions and removals globally at a spatial resolution of 30 m over the years 2001-2019. We estimate that global forests were a net carbon sink of -7.6 +/- 49 GtCO(2)e yr(-1), reflecting a balance between gross carbon removals (-15.6 +/- 49 GtCO(2)e yr(-1)) and gross emissions from deforestation and other disturbances (8.1 +/- 2.5 GtCO(2)e yr(-1)). The geospatial monitoring framework introduced here supports climate policy development by promoting alignment and transparency in setting priorities and tracking collective progress towards forest-specific climate mitigation goals with both local detail and global consistency.