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An investigation into the reactions of biochar in soil

机译：土壤中生物炭反应的研究

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Interactions between biochar, soil, microbes, and plant roots may occur within a short period of time after application to the soil. The extent, rates, and implications of these interactions, however, are far from understood. This review describes the properties of biochars and suggests possible reactions that may occur after the addition of biochars to soil. These include dissolution-precipitation, adsorption-desorption, acid-base, and redox reactions. Attention is given to reactions occurring within pores, and to interactions with roots, microorganisms, and soil fauna. Examination of biochars (from chicken litter, greenwaste, and paper mill sludges) weathered for 1 and 2 years in an Australian Ferrosol provides evidence for some of the mechanisms described in this review and offers an insight to reactions at a molecular scale. These interactions are biochar- and site-specific. Therefore, suitable experimental trials-combining biochar types and different pedoclimatic conditions-are needed to determine the extent to which these reactions influence the potential of biochar as a soil amendment and tool for carbon sequestration.
机译：生物炭，土壤，微生物和植物根系之间的相互作用可能会在施用到土壤后的短时间内发生。但是，这些相互作用的程度，速度和含义还远未弄清。这篇综述描述了生物炭的性质，并提出了在土壤中添加生物炭后可能发生的反应。这些包括溶解沉淀，吸附解吸，酸碱和氧化还原反应。注意孔内发生的反应，以及与根，微生物和土壤动物的相互作用。在澳大利亚铁氧体中风化了1年和2年的生物炭（来自鸡粪，绿色废物和造纸厂的污泥）的检验为本文所述的某些机理提供了证据，并提供了对分子规模反应的深刻见解。这些相互作用是生物炭和位点特异性的。因此，需要结合生物炭类型和不同的气候条件进行适当的试验，以确定这些反应在多大程度上影响生物炭作为土壤改良剂和固碳工具的潜力。

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