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Tillage Effects on Aggregate Turnover and Sequestration of Particulate and Humified Soil Organic Carbon

^a Korea Environment Institute, 613-2 Bulgwang-Dong, Eunpyeong-Gu, Seoul, 122-706 Korea
^b Dep. of Natural Resources and Environ. Sci., Univ. of Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801

View larger version (10K): [in this window] [in a new window]   Fig. 1. Seasonal change of C concentrations in (a) loose (LPOM) and (b) occluded particulate organic matter (OPOM). Means not followed by the same letter differ at P < 0.05.

View larger version (16K): [in this window] [in a new window]   Fig. 2. Seasonal averages of C concentrations in (a) loose (LPOM), (b) occluded particulate organic matter (OPOM), and (c) the humified organic matter fraction (HF). For individual fractions, means not followed by the same letter differ at P < 0.05.

View larger version (24K): [in this window] [in a new window]   Fig. 3. Seasonal changes in dry mean weight diameter (DMWD) from May 2002 to April 2003 in (a) DeKalb and (b) Monmouth. Values are depth-weighted averages. Means that are not followed by the same letter differ at P < 0.05.

View larger version (19K): [in this window] [in a new window]   Fig. 4. Seasonal averages of dry mean weight diameter (DMWD). Within-depth means that are not followed by the same letter differ at P < 0.05.