Figure 7 | Scientific Reports

Figure 7

From: Forest gaps slow the sequestration of soil organic matter: a humification experiment with six foliar litters in an alpine forest

Figure 7

Coefficients and 95% confidence intervals for stepwise analyses of ΔlogK, E4/E6 and A600/C values using seven environmental factors and seven initial chemical compositions during the winter (W) and growing seasons (GS) of the two-year humification experiment.

The dominant factors (red) are numbered and the order of priority signifies the step number in the regression model in each panel. SD, snow depth; MT, mean temperature; PAT, positive accumulated temperature; NAT, negative accumulated temperature; PDD, positive degree days; NDD, negative degree days; FFTC, frequency of freeze-thaw cycle; C, carbon; N, nitrogen; P, phosphorus; WSS, water-soluble substances; OSS, organic-soluble substances; ASS, acid-soluble substances; and AUR, acid-unhydrolyzable residues.

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