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Free‐air CO2 enrichment and soil nitrogen effects on energy balance and evapotranspiration of wheat
Abstract
In order to determine the likely effects of the increasing atmospheric CO 2 concentration on future evapotranspiration, ET, plots of field‐grown wheat were exposed to concentrations of 550 µ mol/mol CO 2 (or 200 µ mol/mol above current ambient levels of about 360 µ mol/mol) using a free‐air CO 2 enrichment (FACE) facility. Data were collected for four growing seasons at ample water and fertilizer (high N) and for two seasons when soil nitrogen was limited (low N). Measurements were made of net radiation, Rn; soil heat flux; air and soil temperatures; canopy temperature, Ts; and wind speed. Sensible heat flux was calculated from the wind and temperature measurements. ET, that is, latent heat flux, was determined as a residual in the energy balance. The FACE treatment increased daytime Ts about 0.6° and 1.1°C at high and low N, respectively. Daily total Rn was reduced by 1.3% at both levels of N. Daily ET was consistently lower in the FACE plots, by about 6.7% and 19.5% for high and low N, respectively.
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Citations
Cited by
Elevated CO2 effects on plant carbon, nitrogen, and water relations: six important lessons from FACE
Leakey, A. D. B., Ainsworth, E. A., Bernacchi, C. J., Rogers, A., Long, S. P., & Ort, D. R. (2009) · Journal of Experimental Botany · doi:10.1093/jxb/erp096 · Cited by 1,678
Climate Impacts on Agriculture: Implications for Crop Production
Hatfield, J. L., Boote, K. J., Kimball, B. A., Ziska, L. H., Izaurralde, R. C., Ort, D., Thomson, A. M., & Wolfe, D. (2011) · Agronomy Journal · doi:10.2134/agronj2010.0303 · Cited by 1,645
Self-citationMethodologies for simulating impacts of climate change on crop production
White, J. W., Hoogenboom, G., Kimball, B. A., & Wall, G. W. (2011) · Field Crops Research · doi:10.1016/j.fcr.2011.07.001 · Cited by 612
Self-citationHussain, M. Z., VanLoocke, A., Siebers, M. H., Ruiz‐Vera, U. M., Cody Markelz, R. J., Leakey, A. D. B., Ort, D. R., & Bernacchi, C. J. (2013) · Global Change Biology · doi:10.1111/gcb.12155 · Cited by 89
Metadata
- Authors
- Kimball, B. A., LaMorte, R. L., Pinter, P. J., Wall, G. W., Hunsaker, D. J., Adamsen, F. J., Leavitt, S. W., Thompson, T. L., Matthias, A. D., & Brooks, T. J.
- Venue
- Water Resources Research
- Publisher
- American Geophysical Union (AGU)
- Published
- 1999-04
- Volume
- 35
- Issue
- 4
- Pages
- 1179-1190
- ISSN
- 0043-1397 (ISSN-L)
- 1944-7973
- OpenAlex
- W2056207826
- Cited by
- 163
- References
- 0
- FWCI
- 14.73
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kimball, B. A., LaMorte, R. L., Pinter, P. J., Wall, G. W., Hunsaker, D. J., Adamsen, F. J., Leavitt, S. W., Thompson, T. L., Matthias, A. D., & Brooks, T. J. (1999). Free‐air CO2 enrichment and soil nitrogen effects on energy balance and evapotranspiration of wheat. Water Resources Research. https://doi.org/10.1029/1998wr900115
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