Forest biogeochemistry in response to droughtAuthor(s): William H. Schlesinger; Michael C. Dietze; Robert B. Jackson; Richard P. Phillips; Charles C. Rhoades; Lindsey E. Rustad; James M. Vose
Source: Global Change Biology. doi: 10.1111/gcb.13105.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
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Drought Impacts on Forest and Rangelands in the United States: A State-of-the-Science Synthesis
Trees alter their use and allocation of nutrients in response to drought, and changes in soil nutrient cycling and trace gas flux (N2O and CH4) are observed when experimental drought is imposed on forests. In extreme droughts, trees are increasingly susceptible to attack by pests and pathogens, which can lead to major changes in nutrient flux to the soil. Extreme droughts often lead to more common and more intense forest fires, causing dramatic changes in the nutrient storage and loss from forest ecosystems. Changes in the future manifestation of drought will affect carbon uptake and storage in forests, leading to feedbacks to the Earth's climate system. We must improve the recognition of drought in nature, our ability to manage our forests in the face of drought, and the parameterization of drought in earth system models for improved predictions of carbon uptake and storage in the world's forests.
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CitationSchlesinger, William H.; Dietze, Michael C.; Jackson, Robert B.; Phillips, Richard P.; Rhoades, Charles C.; Rustad, Lindsey E.; Vose, James M. 2015. Forest biogeochemistry in response to drought. Global Change Biology. doi: 10.1111/gcb.13105.
Keywordsbiogeochemistry, carbon cycle, fire, forest management, insect attack, soil biogeochemistry, mountain pine beetle
- Net carbon uptake has increased through warming-induced changes in temperate forest phenology
- Novel forests maintain ecosystem processes after the decline of native tree species
- Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2
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