Fig. 2
Paleo changes in upper range limit of trees at a 100-year interval across the Tibetan Plateau over the past 22 kyr BP. The elevation changes of the upper range limit of trees on the Tibetan Plateau were reconstructed used the CHELSA TraCE-21k paleoclimate dataset (left), and projection to the end of this century (right) using CMIP6 multi-model ensemble mean under the SSP1–2.6 (yellow), SSP2–4.5 (blue) and SSP5–8.5 (red) scenario, respectively. The gradient yellow and blue solid lines represent the changes in the upper range limit of trees elevation in the southern (<35°N) and northern (>35°N) parts of the Tibetan Plateau, respectively. Spatial distribution of the upper range limit of trees at 1 km2 resolution in each period were displayed above the graph, which red indicates higher elevation while yellow marks low elevation. The black box on the right represents satellite-based observation. The whiskers and boxes represent the 5th, 25th, 75th, and 95th percentiles and the black lines show mean values.
