Research progress on the effects of mineral-modified biochar on soil aggregates
Biochar is a carbon-rich product produced by slow pyrolysis of biomass at a high temperature without oxygen or limited oxygen supply.It has strong stability,large specific surface area,and is a good adsorption material,which is conducive to the cultivation and stability of soil aggregates.In this paper,CiteSpace software was used to analyze the relevant literature on the influence of biochar on soil aggregates retrieved from WOS core database and CNKI database.Based on this,the mechanism and control factors of biochar's influence on the formation and stability of soil aggregates were introduced,and the influence of mineral modified biochar on its characteristics was analyzed.The response of soil aggregates to mineral-modified biochar was summarized.Finally,the key problems to be solved in the application of mineral modified biochar in soil aggregate cultivation were pointed out,in order to provide scientific reference for the efficient utilization of biomass resources and soil carbon pool management under the background of"double-carbon".
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