Results from stepwise linear ANCOVA showing the importance of labile C and pH for BC effect on denitrification rate, product ratio and maximum NO accumulation.

Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ns ‘ 1, ‘:’ means interaction of factors.Results from stepwise linear ANCOVA showing the importance of labile C and pH for BC effect on denitrification rate, product ratio and maximum NO accumulation.显著性标记规则：‘***’对应0.001，‘**’对应0.01，‘*’对应0.05，‘.’对应0.1，‘ns’对应1，‘:’表示因子间的交互作用。 逐步线性协方差分析（stepwise linear ANCOVA）结果表明，易变碳（labile C）与pH值在生物炭（BC）对反硝化速率（denitrification rate）、产物比值（product ratio）及一氧化氮最大累积量（maximum NO accumulation）的影响中具有重要作用。