Amplification of heat extremes by plant CO2 physiological forcing.
作者： Christopher B. Skinner , Christopher J. Poulsen , Justin S. Mankin
DOI: 10.1038/S41467-018-03472-W
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摘要: Plants influence extreme heat events by regulating land-atmosphere water and energy exchanges. The contribution of plants to changes in future extremes will depend on the responses vegetation growth physiology direct indirect effects elevated CO2. Here we use a suite earth system models disentangle radiative versus CO2 wave characteristics. Vegetation quadrupling increase summer occurrence 20 days or more—30–50% response alone—across tropical mid-to-high latitude forests. These increases are caused physiological forcing, which diminishes transpiration its associated cooling effect, reduces clouds precipitation. In contrast recent suggestions, our results indicate CO2-driven enhance frequency intensity most vegetated regions despite transpiration-driven soil moisture savings aboveground biomass from fertilization.
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