生物质炭对农田土壤有机碳及其矿化影响的研究进展

土壤有机碳在生物圈物质循环中起着重要作用,有机碳矿化将显著影响大气CO2的浓度,关系到养分的释放。近年来,生物质炭农用的土壤生态系统固碳减排功能方面的研究受到广泛关注。但由于研究中所采取的具体方法和研究对象等差异,目前研究的结果仍然存在争议。本文主要从试验材料、试验条件和驱动因子等角度综述生物质炭对土壤有机碳含量及矿化影响,并阐述进一步研究值得探索的方向,以客观评价生物质炭的农田固碳减排效应。

Review of Effect of Biochar on Soil Organic Carbon in Cropland and Its Carbon Mineralization

Soil organic carbon plays an important role in the biosphere cycle,and the mineralization of organic carbon will significantly affect the concentration of CO₂ in the atmosphere,also relate to the release of nutrients in the soil.In recent years,the research of carbon sequestration function in farmland soil ecosystem of the biochar amendment has been widely concerned.However,due to the differentiation of specific methods and research objects that have been adopted during these researches,the results of the present research are still controversial.This paper mainly reviewed the effects of biochar on content of soil organic carbon and mineralization from aspects test materials,test conditions,driving factors,etc.And also the paper stated the worthy direction for further research,so as to objectively evaluate the effect of biochar on carbon sequestration and emission in the soil of farmland.