How much is soil nitrous oxide emission reduced with biochar application? An evaluation of meta‐analyses

This data file includes five datasets used to construct the following five figures.

Fig. 1. Response ratios (RR) of biochar application on soil N2O emissions from the meta-analyses and grand mean of RR and its 95% confident interval. Number on the right side is the total number of experiments used for RR calculation.

Fig. 2. Impacts of experimental setting including experiment type (a), ecosystem type (b), and experimental duration (c) on the response ratios (RR) of biochar application on soil N2O emi­­­ssions. Number on the right side is the total number of experiments used for RR calculation.

Fig. 3. Impacts of biochar properties including feedstock (a), pyrolysis temperature (b), pH (c), and C:N ratio (d) on the response ratios (RR) of biochar application on soil N2O emi­­­ssions.  Number on the right side is the total number of experiments used for RR calculation.

Fig. 4. Impacts of soil properties including soil texture (a), soil organic carbon (SOC, b), C:N ratio (c), and soil pH (d) on the response ratios (RR) of biochar application on soil N2O emi­­­ssions. Number on the right side is the total number of experiments used for RR calculation.

Fig. 5. Impacts of agricultural practices including biochar application rate (a), type of fertilizer (b), and nitrogen (N) application rate (c) on the response ratios (RR) of biochar application on soil N2O emi­­­ssion. Number on the right side is the total number of experiments used for RR calculation.

Methods
This data file includes five datasets used to construct the following five figures.