Fig. 1: Spatial distribution of alpine permafrost on the Tibetan Plateau and the locations of the methane (CH4) observation sites across the region.
From: Spatiotemporal patterns of methane fluxes across alpine permafrost region on the Tibetan Plateau

a The red line outlines the Tibetan Plateau within the global permafrost distribution. b Yellow circles indicate the locations of CH4 flux observation sites based on literature synthesis. The global permafrost distribution map is adapted from Obu et al.89 and re-used with permission from Elsevier (License Number 6074130255122). The map of the Tibetan Plateau is adapted from Zou et al.33, © Author(s) 2017, and is distributed under the Creative Commons Attribution 3.0 License (https://creativecommons.org/licenses/by/3.0/).