2008 Joint Annual Meeting (5-9 Oct. 2008): Total Carbon and Nitrogen Deeper in the Soil Profile.
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762-10 Total Carbon and Nitrogen Deeper in the Soil Profile.



Wednesday, 8 October 2008: 11:10 AM
George R. Brown Convention Center, 362C
Darlene Zabowski, Box 352100, University of Washington, College of Forest Resources, Seattle, WA 98195, Nicol Whitney, University of Washington, Seattle, WA 98195, Janita Gurung, University of Washington, Kathmandu, Nepal and Jeff Hatten, University of Washington, College of Forest Resources, Univ. of Washington, Seattle, WA 98195-2100
Historically, most soil C and N analyses have been done on shallow soil samples (<50 cm) with some sampling to 1 m.  In many soil profiles there can be substantial C and N below 1m, some of which is part of the coarse soil fraction (gravel and rocks great than 2mm in diameter).  We examined a variety of soils from different USDA soil orders to determine the amount of carbon and nitrogen present at depth and in the coarse fraction.  Up to 35% of C and N could be missed if sampling is not done below 1m.
See more of: Symposium --Not Only Skin Deep: Does Soil C Exist and Change Below 20 cm?
See more of: S07 Forest, Range & Wildland Soils