Attribution of spatial and temporal variations in terrestrial methane flux over North America (original) (raw)

The attribution of spatial and temporal variations in terrestrial methane (CH 4 ) flux is essential for assessing and mitigating CH 4 emission from terrestrial ecosystems. In this study, we used a process-based model, the Dynamic Land Ecosystem Model (DLEM), in conjunction with spatial data of six major environmental factors to attribute the spatial and temporal variations in the terrestrial methane (CH 4 ) flux over North America from 1979 to 2008 to six individual driving factors and their interaction. Over the past three decades, our simulations indicate that global change factors accumulatively contributed 23.51 ± 9.61 T g CH 4