Soil biogeochemistry is a field of study that focuses on the chemical, physical, and biological processes that occur in soil and how they impact soil health, nutrient cycling, and overall ecosystem function. Researchers in this area investigate how organic and inorganic compounds are transformed and cycled through the soil, including the roles of microbial communities, plants, and environmental factors in these processes. This research is important for understanding how soils can be managed to sustainably support agriculture, carbon sequestration, and overall environmental health.