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An individual-based model of forest volatile organic compound emissions—UVAFME-VOC v1.0

Author

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  • Wang, Bin
  • Shugart, Herman H.
  • Lerdau, Manuel T.

Abstract

Forests produce and emit abundant non-methane volatile hydrocarbon species (VOCs) influencing the atmosphere chemistry and climate. Over a half century of research has produced significant understandings of the biochemistry and eco-physiology of biogenic VOCs. However, VOCs production is highly species-specific, and the impact of changes in species composition and abundance on VOCs emissions is unobservable in the time scales usually seen in field experiments. Prior modelling efforts are based on cases with an aggregate representation of vegetation. Individual-based models of forests simulate the dynamics of complex forest ecosystems based on birth, growth, and death of the individual trees comprising a simulated forest. Here an individual-based forest VOCs emissions model—UVAFME-VOC v1.0—is developed from the state-of-the-art individual-based forest gap model, UVAFME, coupled with a canopy VOCs emission model. UVAFME-VOC v1.0 implementation for the temperate deciduous forest in the southeastern United States is tested by comparisons to independent data in the region. A model application tested the hypothesis that the historical collapse of American Chestnut (Castanea dentate) resulted in the dominance of oak trees (Quercus spp.) and enhanced isoprene emissions. The model demonstrated a capability to simulate the forest compositional and structural dynamics and forest isoprene emission dynamics. The simulations show isoprene emissions depend heavily on forest successional stage and species composition, suggesting that environmental change can affect forest VOCs emissions primarily by influencing forest species composition. Prediction of isoprene emissions, of other phytogenic volatile organic compounds, and of impacts on atmospheric chemistry of various global change agents (e.g., warming, rising CO2, ozone elevation, and herbivory) should explicitly consider forest diversity change. This individual-based model could provide widespread applications in addressing these problems.

Suggested Citation

  • Wang, Bin & Shugart, Herman H. & Lerdau, Manuel T., 2017. "An individual-based model of forest volatile organic compound emissions—UVAFME-VOC v1.0," Ecological Modelling, Elsevier, vol. 350(C), pages 69-78.
  • Handle: RePEc:eee:ecomod:v:350:y:2017:i:c:p:69-78
    DOI: 10.1016/j.ecolmodel.2017.02.006
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    References listed on IDEAS

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    1. MacPherson, Brian & Gras, Robin, 2016. "Individual-based ecological models: Adjunctive tools or experimental systems?," Ecological Modelling, Elsevier, vol. 323(C), pages 106-114.
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    Cited by:

    1. Foster, Adrianna C. & Armstrong, Amanda H. & Shuman, Jacquelyn K. & Shugart, Herman H. & Rogers, Brendan M. & Mack, Michelle C. & Goetz, Scott J. & Ranson, K. Jon, 2019. "Importance of tree- and species-level interactions with wildfire, climate, and soils in interior Alaska: Implications for forest change under a warming climate," Ecological Modelling, Elsevier, vol. 409(C), pages 1-1.

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