08 February 2016

A new conceptual model of short-term photosynthate storage and transport based on experimental observations

Science

Improve understanding of the timing and magnitude of carbon fluxes through leaves, stem, roots, and soil through experimentation and modeling in a loblolly pine stand.

Approach

Use carbon isotope and other data to test and improve the performance of the Community Land Model in capturing short-term carbon and water dynamics in response to manipulative shading treatments. 

Impact

We were able to demonstrate the fidelity of many model processes and highlights the utility of evaluating biophysical and ecophysiological processes against targeted experimental manipulations. We presented a new and testable hypothesis for the mechanism and dynamics of plant carbohydrate storage and transport in leaves, phloem, and roots.

Contact
Jiafu Mao
ORNL
Publications
Mao, J., Ricciuto, D., Thornton, P., et al. "Evaluating the Community Land Model in a Pine Stand with Shading Manipulations and 13CO2 Labeling." Biogeosciences 13, 641-657 (2016). [10.5194/bg-13-641-2016].
Acknowledgments

This research was supported by DOE, Office of Science, Biological and Environmental Research, under the Terrestrial Ecosystem Science and Erth System Modeling programs.