生物炭对土壤和碳动态的影响,在用生物固体和无机肥料修改的Spodosol中
Yanyan Lu1, Maria Lucia Silveira2, Joao M B Vendramini2
1School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China.
Journal of environmental quality
|July 21, 2023
概括
生物炭与肥料的应用在减少 (N) 和碳 (C) 漏或N2O排放方面表现出有限的有效性. 松木生物炭略有减少了的出水,但总体而言,联合应用的影响是可变的,并且取决于生物炭和N来源.
科学领域:
- 土壤科学 土壤科学
- 环境化学环境化学
- 农业学是一种农业学.
背景情况:
- 生物炭以保持营养物质,特别是 (N),并减少营养物质运输风险而闻名.
- 生物炭与有机和无机肥料的联合应用存在有限的研究.
- 了解这些相互作用对于优化肥料使用和最大限度地减少环境损失至关重要.
研究的目的:
- 评估两种生物炭类型 (松树和草) 对土壤 (N) 和碳 (C) 动态的影响.
- 评估与不同N来源 (酸,B类和AA类生物固体) 联合应用生物炭的影响.
- 研究生物炭对营养物质出和N2O排放的影响.
主要方法:
- 进行了三个实验室研究:静态化,柱子浸出和批量吸附.
- 松树和草的生物炭分别在800°C和400°C产生.
- 在180公斤的Nha-1和1% (w/w) 的生物炭下应用了源.
主要成果:
- 生物炭对土壤N和C动态的影响是可变的,具体取决于所使用的生物炭和N来源.
- 松树生物炭显示氨 (NH4) 漏略减小,但生物炭没有减少酸盐 (NO3) 或总无机N漏.
- 两种生物炭都未能吸收NO3或影响土壤N2O排放;B类生物固体导致N漏和N2O排放增加.
结论:
- 生物炭与常见肥料的同时应用在防止通过漏或N2O排放的N和C损失方面具有有限的有效性.
- 生物炭的有效性高度依赖于其特性和与之结合的肥料类型.
- 需要进一步的研究,以阐明在这些联合应用场景下控制土壤N和C动态的机制.
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