Chunying Xu

Conflicts of Interest The authors declare no conflicts of interest. References 1, , , et al., “A Self-Healing Epoxy Composite Coating Based on Ph-Responsive PCN-222 Smart Containers for Long-Term Anticorrosion of Aluminum Alloy,” Corrosion Science 221 (2023): 111318. 2, , , , and , “Self-Alignment of Amino-Functionalized Ti3C2Tx Modified With Cerium-Doped ZIF-8 Nanocontainer Towards Anti-Corrosive/Wear and Self-Healing Application,” Composites, Part B: Engineering 271 (2024): 111144.

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4. Discussion 4.1. Effects of Environmental Factors on N2O Emissions Our results indicated that biochar amendment significantly reduced N2O emissions by 20.2% (Figure 4), and many relevant studies reached the similar conclusion [36,37,38]. Dawar et al. [39] found that biochar reduced N2O emissions by 20–24%, which is close to our results. Additionally, we found that with the continuous application of biochar over the 3-year experiment, the emission reduction effect of N2O became obvious (Figure 4).