Biochar’s role as an alternative N-fertilizer: ammonia capture
Biochar’s role as an alternative N-fertilizer: ammonia capture
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DOI：
10.1007/s11104-011-0930-8
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发表时间：
2011
期刊：
影响因子：
4.9
通讯作者：
K. Spokas;J. Novak;R. Venterea
中科院分区：
文献类型：
--
作者：
K. Spokas;J. Novak;R. Venterea
背景生物炭作为固碳剂的作用，同时作为改良剂使用时提供土壤肥力的改善，已经受到社会各界的广泛关注，包括学术界、工业界、政府以及公众。这导致了一些夸大和可能的混乱，关于生物炭的实际有效性作为土壤改良剂。生物炭似乎具有真实的潜在显著影响的一个很少探索的领域是土壤氮循环。ScopeTaghizadeh-Toosi等人（本期）研究了生物炭对氨的吸附，作为提供富氮土壤改良剂的一种手段。被捕获的氨的寿命特别显著;它在实验室气流下以稳定的形式被隔离至少12天。此外，作者观察到增加15 N吸收的植物生长在土壤中的修订与15 N富集的生物炭，表明15 N是不可逆的约束，但，是plant-available.ConclusionsTheir的意见增加了可信度利用生物炭作为载体氮肥，同时可能减少不希望的环境后果，通过气体排放，地表径流，和沥滤。
BackgroundBiochar’s role as a carbon sequestration agent, while simultaneously providing soil fertility improvements when used as an amendment, has been receiving significant attention across all sectors of society, ranging from academia, industry, government, as well as the general public. This has lead to some exaggeration and possible confusion regarding biochar’s actual effectiveness as a soil amendment. One sparsely explored area where biochar appears to have real potential for significant impact is the soil nitrogen cycle.ScopeTaghizadeh-Toosi et al. (this issue) examined ammonia sorption on biochar as a means of providing a nitrogen-enriched soil amendment. The longevity of the trapped ammonia was particularly remarkable; it was sequestered in a stable form for at least 12 days under laboratory air flow. Furthermore, the authors observed increased15N uptake by plants grown in soil amended with the15N-enriched biochar, indicating that the15N was not irreversibly bound, but, was plant-available.ConclusionsTheir observations add credence to utilizing biochar as a carrier for nitrogen fertilization, while potentially reducing the undesired environmental consequences through gas emissions, overland flow, and leaching.