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Modeling Nutrient Uptake as a Component of Loblolly Pine Response to Environmental Stress

  • J. Michael Kelly
  • Ruth D. Yanai
Part of the Ecological Studies book series (ECOLSTUD, volume 128)

Abstract

The ability of plants to acquire nutrients and fix carbon depends on the below ground processes associated with soil-nutrient supply, uptake kinetics, and root-surface area, combined with the physiological processes that capture, fix, and redistribute carbon from the aboveground portions of the plant to the belowground parts. Plants are exposed to multiple environmental stresses that act both individually and collectively to limit plant growth, by reducing rates of photosynthesis, growth, and carbon storage. Although the relative importance of various stresses depends on the site, for southern forests, available water and nutrient supplies in addition to tropospheric ozone are generally the factors of greatest concern (McLaughlin, 1985). Any stress that directly or indirectly impairs the ability of the plant to fix and store carbon can exacerbate nutrient and water stress, because root growth, the development of mycorrhizal associations, and active uptake of nutrients all depend on carbon supply.

Keywords

Root Length Uptake Kinetic Depletion Zone Root Radius Uptake Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York, Inc. 1998

Authors and Affiliations

  • J. Michael Kelly
  • Ruth D. Yanai

There are no affiliations available

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