Coupling Biogeochemistry and Hydropedology to Advance Carbon and Nitrogen Cycling Science

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Book Chapter

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Biogeochemical processes are inextricably linked to hydropedology. Soil structure and water content interact to affect the transport and transformation of nutrients and carbon. These processes can affect ecosystem productivity, greenhouse gas emissions, as well as losses of dissolved nutrients and carbon. Advances in soil biogeochemistry research often rely on laboratory research and future approaches will continue to improve the integration with hydropedology by explicitly considering the interacting effects of soil structure and hydrology. Nevertheless, significant progress in coupling soil biogeochemistry and hydropedology has been made, particularly at the field scale, by incorporating advective processes into concepts of biogeochemical dynamics. This work has focused on “hot moments,” which are brief periods of time that account for disproportionately large amounts of material transport and transformation. Hot moments often result from pulses of water availability and provide exceptional opportunities to couple soil biogeochemistry and hydropedology. Future soils research will benefit by drawing from stream ecology and biogeochemistry research principles that have a rich history of exploring interactions between material transport and transformation.

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Citation / Publisher Attribution

Coupling Biogeochemistry and Hydropedology to Advance Carbon and Nitrogen Cycling Science, in H. Lin (Ed.), Hydropedology, Academic Press, p. 711-735