高粱、水稻和臂形草生物硝化抑制剂对一氧化氮排放的影响：一项多层次荟萃分析。
Effect of biological nitrification inhibitors from sorghum, rice, and signal grass on NO emission: A multilevel meta-analysis.
作者信息
Ma Hongze, Jia Xiaoyu, Zhang Xiaoshan, Cui Ke, Zhang Xi, Wang Xinyu, Zhang Hui, Shangguan Zhouping, Canisares Lucas Pecci, Zhong Yangquanwei, Wu Jianghua, Yan Weiming
机构信息
State Key Laboratory of Soil and Water Conservation and Desertification Control, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Environment and Sustainability, School of Science and the Environment, Memorial University of Newfoundland, Corner Brook, NL, A2H 5G4, Canada; Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, Shaanxi, 712100, PR China.
School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan, 450045, PR China.
出版信息
Environ Res. 2025 Jun 16;283:122159. doi: 10.1016/j.envres.2025.122159.
Some plant metabolites, known as biological nitrification inhibitors (BNIs), have the potential to reduce soil nitrous oxide (NO) emission. While global patterns of BNI-induced NO emission reductions have been investigated, there is still a lack of comprehensive quantitative analysis that assess the impacts of BNIs on NO emission and its potential driving factors. Therefore, we integrated this comprehensive multilevel meta-analysis to assess the effects of BNIs on soil inorganic nitrogen (N) dynamics, associated functional genes, and NO emission, and to investigate the relevant factors influencing the efficacy of BNIs. Our study conducted a multilevel meta-analysis using 516 paired observations (BNI application vs control) from 41 publications to evaluate the response of NO emission, crop yield, inorganic N, ammonia monooxygenase subunit A (amoA) gene to BNIs and identify the key influencing factors. Our results indicated that BNIs had a significant negative effect on soil NO emission (-24.23 %, CI: -32.99 % to -14.32 %), and significantly increased soil ammonium (NH)-N (20.45 %, CI: 12.96 %-28.44 %) while significantly reducing soil nitrate (NO)-N (-19.25 %, CI: -23.17 % to -15.13 %). BNIs also resulted in a reduction of amoA-ammonia-oxidizing bacteria (AOB) (-95.74 %, CI: -98.01 % to -90.87 %) and amoA-ammonia-oxidizing archaea (AOA) (-95.81 %, CI: -98.10 % to -90.79 %) abundance. In addition, BNI source and type, soil pH and texture, N rate and source impact the inhibitory effect of BNIs on NO emission. Soil pH also impacted the response of NH-N and NO-N to BNIs in field experiments. Notably, BNIs were generally more effective in mesocosm experiments than in field trials, indicating that environmental variability may limit their performance under practical agricultural conditions. These findings highlight the importance of considering microbial functional responses, particularly amoA-AOB, when evaluating the mechanisms and effectiveness of BNI strategies. More field-based studies are needed to verify the stability and generalizability of BNIs for mitigating soil NO emission in agricultural systems.
一些植物代谢产物，即所谓的生物硝化抑制剂（BNIs），有潜力减少土壤一氧化二氮（N₂O）排放。虽然已经对BNIs引起的N₂O排放减少的全球模式进行了研究，但仍缺乏全面的定量分析来评估BNIs对N₂O排放的影响及其潜在驱动因素。因此，我们进行了这项全面的多层次荟萃分析，以评估BNIs对土壤无机氮（N）动态、相关功能基因和N₂O排放的影响，并研究影响BNIs功效的相关因素。我们的研究使用了来自41篇出版物的516对观测数据（BNI施用组与对照组）进行多层次荟萃分析，以评估N₂O排放、作物产量、无机氮、氨单加氧酶亚基A（amoA）基因对BNIs的响应，并确定关键影响因素。我们的结果表明，BNIs对土壤N₂O排放有显著的负面影响（-24.23%，置信区间：-32.99%至-14.32%），显著增加了土壤铵态氮（NH₄⁺-N）（20.45%，置信区间：12.96% - 28.44%），同时显著降低了土壤硝态氮（NO₃⁻-N）（-19.25%，置信区间：-23.17%至-15.13%）。BNIs还导致氨氧化细菌（AOB）的amoA丰度降低（-95.74%，置信区间：-98.01%至-90.87%）以及氨氧化古菌（AOA）的amoA丰度降低（-95.81%，置信区间：-98.10%至-90.79%）。此外，BNI的来源和类型、土壤pH值和质地、施氮量和氮源会影响BNIs对N₂O排放的抑制效果。在田间试验中，土壤pH值也会影响NH₄⁺-N和NO₃⁻-N对BNIs的响应。值得注意的是，BNIs在中宇宙实验中通常比在田间试验中更有效，这表明环境变异性可能会限制它们在实际农业条件下的性能。这些发现凸显了在评估BNI策略的机制和有效性时考虑微生物功能响应，特别是amoA-AOB的重要性。需要更多基于田间的研究来验证BNIs在农业系统中减轻土壤N₂O排放的稳定性和普遍性。
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