Research Article
Baseline-Dependent Responses of Soil Organic Carbon Dynamics to Climate and Land Disturbances
Table 1
Land use/cover types and areal percentages within the study area.
| Land use/cover type | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 |
| Water (%) | 9.8 | 9.8 | 9.4 | 11.3 | 9.5 | 9.5 | 9.4 | 9.5 | 9.5 | 9.6 | Urban (%) | 4.4 | 4.4 | 4.4 | 4.0 | 4.1 | 4.2 | 4.3 | 4.1 | 5.0 | 5.6 | Forests (%) | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | Grassland (%) | 34.5 | 34.5 | 33.0 | 31.6 | 29.0 | 30.5 | 29.7 | 32.6 | 27.6 | 31.0 |
| Agricultural lands (%) | | | | | | | | | | | Pasture | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.9 | 13.9 | Barley | 4.3 | 4.3 | 1.6 | 3.7 | 0.5 | 2.2 | 1.3 | 1.0 | 0.6 | 0.1 | Corn | 0.5 | 0.5 | 1.8 | 3.9 | 1.9 | 2.4 | 0.2 | 5.3 | 4.7 | 13.5 | Soybeans | 1.0 | 1.0 | 4.7 | 5.0 | 11.6 | 21.3 | 17.7 | 14.5 | 19.9 | 14.6 | Other crops | 4.5 | 4.5 | 5.0 | 4.7 | 4.5 | 5.5 | 2.1 | 2.1 | 1.8 | 0.3 | Spring wheat | 8.2 | 8.2 | 12.6 | 6.8 | 15.0 | 3.8 | 7.2 | 6.1 | 5.6 | 3.6 | Fallow | 3.4 | 3.4 | 2.5 | 5.9 | 2.0 | 1.9 | 9.3 | 3.0 | 4.3 | 0.1 | Sunflowers | 10.7 | 10.7 | 6.3 | 4.3 | 3.1 | 0.0 | 0.1 | 3.0 | 1.7 | 0.9 | Sum | 46.5 | 46.5 | 48.4 | 48.2 | 52.6 | 51.0 | 51.9 | 49.1 | 52.6 | 47.0 |
| Wetlands (%) | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.8 | 6.2 |
| Sum (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
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The total land area is about 260 km2.
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