The slope angle and SOL thickness as covariates with significant or marginally significant interactions with the locality factor were closely related (Fig. 2 B): the regression coefficient of SOL thickness on slope angle was significant in Bucharama (b = − 0.126, p = 0.017) and marginally significant in Malyj Orokan (b = − 0.377, p = 0.088), with no significant difference between them.
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Interrelationships among mountain relief, surface organic layer, soil organic carbon, and its mineral association under subarctic forest tundra.
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