Huang Ni, Wang Li, Song Xiao-Peng, Black T Andrew, Jassal Rachhpal S, Myneni Ranga B, Wu Chaoyang, Wang Lei, Song Wanjuan, Ji Dabin, Yu Shanshan, Niu Zheng
State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing Normal University, Beijing, China.
Department of Geosciences, Texas Tech University, Lubbock, TX, USA.
Sci Adv. 2020 Oct 7;6(41). doi: 10.1126/sciadv.abb8508. Print 2020 Oct.
Soil respiration ( ) represents the largest flux of CO from terrestrial ecosystems to the atmosphere, but its spatial and temporal changes as well as the driving forces are not well understood. We derived a product of annual global from 2000 to 2014 at 1 km by 1 km spatial resolution using remote sensing data and biome-specific statistical models. Different from the existing view that climate change dominated changes in , we showed that land-cover change played a more important role in regulating changes in temperate and boreal regions during 2000-2014. Significant changes in occurred more frequently in areas with significant changes in short vegetation cover (i.e., all vegetation shorter than 5 m in height) than in areas with significant climate change. These results contribute to our understanding of global patterns and highlight the importance of land-cover change in driving global and regional changes.
土壤呼吸（ ）是陆地生态系统向大气中排放二氧化碳的最大通量，但其时空变化以及驱动因素尚未得到充分理解。我们利用遥感数据和特定生物群落的统计模型，在1公里×1公里的空间分辨率下，得出了2000年至2014年全球年 的数据产品。与气候变化主导 变化的现有观点不同，我们发现，在2000 - 2014年期间，土地覆盖变化在调节温带和寒带地区的 变化中发挥了更重要的作用。短植被覆盖（即所有高度低于5米的植被）发生显著变化的地区， 的显著变化比气候变化显著的地区更为频繁。这些结果有助于我们理解全球 模式，并突出了土地覆盖变化在驱动全球和区域 变化中的重要性。
