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Published online 17 July 2007
Published in J Environ Qual 36:1368-1376 (2007)
DOI: 10.2134/jeq2006.0255
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Nitrous Oxide Accumulation in Soils from Riparian Buffers of a Coastal Plain Watershed–Carbon/Nitrogen Ratio Control

P. G. Hunt*, T. A. Matheny and K. S. Ro

USDA-ARS, Coastal Plains Soil, Water, and Plant Research Center, Florence, SC 29501


Figure 1
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  		Fig. 1. Site types locations for sampling soil denitrification enzyme activity in riparian buffers of a Coastal Plain watershed.

 

Figure 2
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  		Fig. 2. Denitrification enzyme activity (DEA) in riparian buffers of a Coastal Plain watershed by soil profile depth. *, Standard deviation for DEA with acetylene; **, standard deviation for DEA without acetylene.

 

Figure 3
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  		Fig. 3. Denitrification enzyme activity (DEA) in riparian buffers of a Coastal Plain watershed by soil profile depth for glucose- and nitrate-amended soil. *, Standard deviation for DEA with acetylene; **, standard deviation for DEA without acetylene.

 

Figure 4
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  		Fig. 4. Denitrification enzyme activity (DEA) versus C/N ratio for riparian buffer soils in a Coastal Plain watershed. *, Standard deviation for DEA with acetylene; **, standard deviation for DEA without acetylene.

 

Figure 5
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  		Fig. 5. Denitrification enzyme activity (DEA) versus C/N ratio for riparian buffer soils in a Coastal Plain watershed for glucose- and nitrate-amended soil. *, Standard deviation for DEA with acetylene; **, standard deviation for DEA without acetylene.

 




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