Effect of Soil Microorganisms on Carbon Fixation Capacity of Biochar

Abstract

In recent years, the impact of climate change caused by greenhouse gases such as carbon dioxide, nitrous oxide and methane has led scientists to pay attention to the use of biochar. As a new type of fertilizer, biochar has been successfully applied in agricultural production and soil remediation. It can help remove greenhouse gases from the atmosphere, convert them into very stable forms, and store them in the soil for thousands of years, thus realizing carbon sequestration. The carbon sequestration capacity of soil can be influenced by soil microbes and biochar. Therefore, it is important to study the effect of soil microbes and biochar on biological carbon sequestration for mitigating greenhouse effect in the future. It is also necessary to clarify the relationship between soil microorganism and biochar for the effective utilization of biochar and the enhancement of soil fertility. In this paper, the mechanisms of carbon sequestration by microorganisms and biochar were summarized on the basis of previous studies, and the interaction mechanism between biochar and microorganisms was summarized. With the joint effort of microorganisms and biochar, carbon fixation capacity and efficiency can be significantly improved.