Relating to the chemical relationships between the geology of an area and its plant and animal life. In land use planning, the term is more often used for all of the naturally-occurring objects, processes, and relationships in an area. Often used in the sense of the biogeochemical parameters of a planning area. Biogeochemical is approximately equivalent to the natural ecosystem and ecosystem functions of a planning area. This composite term is based on the assumption that all naturally-occurring things can be classified as being biological, geological, or chemical.

the movement of chemical elements between organisms and non-living compartments of atmosphere, aquatic systems and soils.

short for biological, geological, and chemical; often used to describe cycling of elements in the sea (i.e., biogeochemical cycling)

refers to the recycling chemistry between plants, animals and the earth's sediments.