摘要
Understanding soil kinetic processes is essential for predicting the fate of contaminants and elemental cycling in the environment since the biogeochemical reactions in soil rarely reach equilibrium in the field due to the frequent changes of natural conditions.However,quantifying the soil kinetic processes is one of the most challenging topics in environmental geosciences,because it is complicated by the heterogeneous nature of the soil system,the coupling of multiple biogeochemical and transport processes,and the requirements of linking varying temporal and spatial scales in quantitative modeling.Soil is a complex mixture containing soil organic matter(SOM),minerals,and microbes,whose properties and distributions are highly heterogeneous and control chemical flux in soil environments.The dynamic coupling of multiple geochemical reactions(e.g.,sorption/desorption,reduction/oxidation,and precipitation/dissolution),microbiological processes(e.g.,biomass growth and organic matter decomposition),and transport processes(e.g.,diffusion and advection)at varying temporal and spatial scales is a key feature of soil kinetic processes,and is fundamentally important for their quantitative descriptions.
基金
Funding was provided by the National Natural Science Foundation of China(Project number:42025701).
