Advances in denitrification driven by soil minerals
Although the application of nitrogen fertilizer has greatly promoted crop yield,it has also resulted in a series of ecological and environmental problems.The laws of nitrogen transformation in farmland soils have long been the focus of researchers.In this paper,advances in denitrification driven by soil minerals(ferrous[Fe(Ⅱ)]and manganese[Mn(Ⅱ)])that provide electrons for denitrification in farmland soil,with the exception of organic matter,are introduced,and the factors that affect denitrification driven by soil minerals are discussed.Although the denitrification process driven by Fe(Ⅱ)and Mn(Ⅱ)has been mainly been studied under the pure phase condition,in recent years,increasing evidence has shown that Fe(Ⅱ)and Mn(Ⅱ)can also provide electrons for denitrification in complex media,such as soils.However,the proportion of soil mineral-driven denitrification in soil denitrification process is uncertain,and its mechanism and effect on soil nitrogen cycle and greenhouse gas emissions remains unclear.This study provides a basis for the future study of the factors and mechanisms of soil mineral-driven denitrification in farmland soil and the relationship between this process and organic matter driven heterotrophic denitrification.
万方数据
维普
