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Published online 6 July 2006
Published in J Environ Qual 35:1620-1628 (2006)
DOI: 10.2134/jeq2005.0260
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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Soil Carbon and Nitrogen Storage in Response to Fire in a Temperate Mixed-Grass Savanna

X. Daia,*, T. W. Bouttona, M. Hailemichaela, R. J. Ansleyb and K. E. Jessupa

a Department of Rangeland Ecology and Management, Texas A&M University, College Station, TX 77843-2126
b Texas Agricultural Experiment Station, P.O. Box 1658, Vernon, TX 76384, X. Dai, present address: Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843-2474


Figure 1
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  		Fig. 1. Soil organic C and N concentration (g kg–1), C to N ratio, and soil bulk density (g cm–3) relative to fire treatments, vegetation types, and soil depth. Data are means ± standard errors, and are plotted at the midpoint of each depth interval. SF, summer fire; WF, winter fire; SWF, alternate summer and winter fire.

 

Figure 2
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  		Fig. 2. Soil organic C and N density (g m–2) relative to fire treatments, vegetation types, and soil depth. Data are means ± standard errors, and are plotted at the midpoint of each depth interval. SF, summer fire; WF, winter fire; SWF, alternate summer and winter fire.

 

Figure 3
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  		Fig. 3. The {delta}13C values and estimated percent C from C4 plants in soils beneath three vegetation types and four fire treatments at soil depth intervals. Data are means ± standard errors, and are plotted at the midpoint of each depth interval. SF, summer fire; WF, winter fire; SWF, alternate summer and winter fire.

 




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Copyright © 2006 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.