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Diurnal and Seasonal CO²–C Flux from Soil as Related to Erosion Phases in Central Ohio

^a School of Natural Resources, The Ohio State Univ., 2021 Coffey Rd., Columbus, OH 43210 USA
^b National Soil Survey Center, USDA-NRCS, 100 Centennial Mall North, Rm. 152., Lincoln, NE 68508-3868 USA

View larger version (36K): [in a new window]   Fig. 1 Seasonal CO2–C flux, soil temperature, and soil moisture content variation for four erosion phases

View larger version (29K): [in a new window]   Fig. 2 Erosion phase effects on seasonal CO2–C flux between July 1995 and June 1997. Bars indicate Fisher's LSD where significant at P < 0.10

View larger version (32K): [in a new window]   Fig. 3 Diurnal variations in seasonal CO2–C flux averaged across four erosion phases between July 1995 and June 1997. Bars indicate Fisher's LSD where significant at P < 0.10

View larger version (18K): [in a new window]   Fig. 4 Curve-fit line for hourly C flux vs. soil temperature data

View larger version (15K): [in a new window]   Fig. 5 Plot of curve fit line for average daily C flux vs. soil temperature data across all erosion phases