Donut Chart from Scientific Research

The proportions of annual CH 4 release in the ways of water storage, ice bubble, ebullition and diffusion for the whole year under different vegetation types on the Plateau. The number at centers of the circle indicates the annual CH 4 emissions from thermokarst lakes (Gg C yr −1 ). One-way analysis of variance (ANOVA) with Tukey’s HSD post hoc comparisons are used to test differences in concentrations across different vegetation types and periods at a significance level of P < 0.05.

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