DATA
Data Tables
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For ease of subsequent analysis, all collected data were organized into a single comprehensive table. However, due to space constraints, the data are presented in three separate tables here. Table 1 includes the geographical location, land system type, and climatic data for each study. Table 2 contains the soil property data, including both treatment and control values, along with their corresponding standard deviations (SD). Table 3 includes greenhouse gas (GHG) emission data, again with both treatment and control values and their respective SDs.
Table 1. Geographic Location, Land System Type, and Climate Data from Literature Studies
Table 2. Soil Property Data from Literature Studies (Treatment and Control Values)
Table 3. Greenhouse Gas Emission Data from Literature Studies (Treatment and Control Values)
Exploratory Graphics
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Following the organization of these tables, I performed normality tests on the data, with results for NH₄⁺ and CO₂ shown in Figure 2. While only these two parameters are presented here for brevity, all other parameters passed normality tests.
Figure 2. Normality Test for NH₄⁺ and CO₂ (QQ Plot and Residual Distribution)
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Additionally, I conducted correlation analyses between various ecological indicators and environmental factors, including Rate, Duration, MAT and MAP. The results of these analyses are presented in Figure 3. Some indicators or system quantities were insufficient for regression fitting analysis. Figure 3-1 shows the relationship with Rate, Figure 3-2 with Duration, Figure 3-3 with MAT, and Figure 3-4 with MAP.
Figure 3-1. Correlation Analysis between Biochar Application Rate and NH₄⁺ / NO₃⁻ / pH / Productivity / SOC / CO₂
Figure 3-2. Correlation Analysis between Duration and Productivity / NH₄⁺ / CO₂ / pH / CH₄ / N₂O / NO₃⁻
Figure 3-3. Correlation Analysis between MAT and pH / NO₃⁻ / CO₂ / SOC / NH₄⁺ / Productivity
