Projected partitioning of carbon by cotton and soybean crops in USA under climate change
The increase in atmospheric CO{sub 2} concentration and predicted global warming associated with climate change will have a substantial impact on agricultural production. Possible changes in crop yields have been an object of scrutiny in several extensive studies. Much less attention has been paid to changes in carbon partitioning between shoots and roots as affected by climate changes. This partitioning is essential both for carbon sequestration in soil and for aboveground biomass production. In our experiments with cotton plants, carbon allocation to roots has increased or decreased up to 30% with increase in [CO{sub 2}] depending on temperature levels and water availability. The carbon partitioning is a complex result of trade between roots needing to grow to supply water and nutrients and shoots needing to grow to supply carbon to the whole plant and to provide the reproduction. To estimate effects of the environment on the carbon partitioning, one has to use comprehensive crop simulators that explicitly account for the physiological processes resulting in the partitioning.
- OSTI ID:
- 577225
- Report Number(s):
- CONF-970522-; TRN: 98:000898-0038
- Resource Relation:
- Conference: 8. global warming international conference and expo, New York, NY (United States), 25-28 May 1997; Other Information: PBD: 1997; Related Information: Is Part Of 8th Global warming international conference and exposition; PB: 156 p.
- Country of Publication:
- United States
- Language:
- English
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