3.4. Influencing factors in the decomposition of litter
The Pearson’s correlation analyses and linear regression analysis showed that the litter K -value was positively correlated with cellulose content (R2 = 0.217, P < 0.001), INV (R2 = 0.242, P < 0.001), and CBH (R2 = 0.1, P < 0.01) activity, and negatively correlated with N/P (R2 = 0.069, P< 0.05) (Fig.5 and 7). Moreover, the contributions of litter cellulose content (28.53%) and soil INV activity (26.06%) to K were significantly higher than other indicators (Fig.6).