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Published online 2 June 2005
Published in Soil Sci Soc Am J 69:1086-1093 (2005)
DOI: 10.2136/sssaj2004.0322
© 2005 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Right arrow Carbon Sequestration
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Soil Carbon Storage Estimation in a Forested Watershed using Quantitative Soil-Landscape Modeling

James A. Thompsona,* and Randall K. Kolkab

a Division of Plant and Soil Sciences, West Virginia Univ., Morgantown, WV 26506-6108
b USDA Forest Service-North Central Research Station, Grand Rapids, MN 55744-3399



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  		Fig. 1. Digital elevation model for the Clemons Fork watershed and the location of sample points. Streams (white) are shown for reference. Inset: The location of Robinson Forest in southeastern Kentucky.

 


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  		Fig. 2. Soil organic C distribution in the upper 30 cm for soils of the Clemons Fork watershed of Robinson Forest calculated from SSURGO soil map unit data.

 


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  		Fig. 3. Boxplots of SOC in the Clemons Fork watershed.

 


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  		Fig. 4. Predicted vs. measured SOC at 26 independent validation points within the Clemons Fork watershed of Robinson Forest. Different symbols indicate samples from different slope aspect classes ({circ} = NE, {triangleup} = NW, {square} = SE, {diamond} = SW).

 


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  		Fig. 5. Soil organic C distribution in the upper 30 cm for soils of the Clemons Fork watershed of Robinson Forest calculated using developed soil-landscape models.

 


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  		Fig. 6. Difference between soil organic C values between that calculated from the empirical soil landscape models and that calculated from SSURGO soil map unit data.

 




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