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Jing Tang

Researcher

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Process Understanding of Soil BVOC Fluxes in Natural Ecosystems : A Review

Author

  • J. Tang
  • G. Schurgers
  • R. Rinnan

Summary, in English

Biogenic volatile organic compounds (BVOCs) can be released from soils to the atmosphere through microbial decomposition of plant residues or soil organic carbon, root emission, evaporation of litter-stored BVOCs, and other physical processes. Soils can also act as a sink of BVOCs through biotic and abiotic uptake. Currently, the source and sink capabilities of soils have not been explicitly accounted for in global BVOC estimates from the terrestrial biosphere. In this review, we summarize the current knowledge of soil BVOC processes and aim to propose a generic framework for modelling soil BVOCs based on current understanding and data availability. To achieve this target, we start by reviewing measured sources and sinks of soil BVOCs and summarize commonly reported compounds. Next, we strive to disentangle the drivers for the underlying biotic and abiotic processes. We have ranked the list of compounds, known to be emitted from soils, based on our current understanding of how each process controls emission and uptake. We then present a modelling framework to describe soil BVOC emissions. The proposed framework is an important step toward initializing modelling exercises related to soil BVOC fluxes. Finally, we also provide suggestions for measurements needed to separate individual processes, as well as explore long-term and large-scale patterns in soil BVOC fluxes.

Department/s

  • Dept of Physical Geography and Ecosystem Science
  • MERGE: ModElling the Regional and Global Earth system
  • Department of Biology

Publishing year

2019-07-23

Language

English

Pages

966-986

Publication/Series

Reviews of Geophysics

Volume

57

Issue

3

Document type

Journal article review

Publisher

American Geophysical Union (AGU)

Topic

  • Environmental Sciences

Keywords

  • biogenic volatile organic compound
  • decomposition
  • ecosystem models
  • microbial activity
  • soil emission
  • soil uptake

Status

Published

Project

  • Modelling Arctic Biogenic Volatile Organic Compounds Emissions and their Impacts on Regional Air Quality

ISBN/ISSN/Other

  • ISSN: 8755-1209