Fig. 2: Dependence of RS changes on biomes and latitudes.
From: Temporal changes in global soil respiration since 1987
a–c The relationships between RS and the year in 1987–1999 and 2000–2016 in tropical and subtropical biomes (a), temperate and Mediterranean biomes (b), and boreal and Arctic biomes (c). The slope of linear regression indicates the rate of RS changes in different biomes. The dot density represents data density at each point. Solid lines indicate significant trends (P < 0.050), while dashed lines indicate insignificant trends (P ≥ 0.050). d Latitude dependence of RS changes based on the moving subset window analysis. Each window includes a subset of RS data within a 30° latitude interval and moves forward by 1° step. The bars represent the rates of RS changes in different latitudes, calculated as average annual Rs change (ΔRs) in 1987–2016. The number above each bar refers to the number of RS records belonging to the subset window. The color scale of the bars corresponds to the colors representing different biomes in (a–c). ***P < 0.001, **P < 0.010, *P < 0.050.
