The Scientific World Journal / 2014 / Article / Tab 1

Research Article

Short-Term Effects of Tillage Practices on Soil Organic Carbon Turnover Assessed by δ13C Abundance in Particle-Size Fractions of Black Soils from Northeast China

Table 1

δ 13C abundances, C3–C and C4–C fractions in the plough layer of Black soil under no tillage (NT) and mouldboard plough (MP) in 2006.

Treatmentsδ 13C ( ) (%) (%)C4–C (g kg−1)C3–C (g kg−1)

0–10 cm
 Coarse POCNT−19.832.267.80.480.83
MP−20.232.167.90.270.58
 Fine POCNT−19.340.859.20.320.47
MP−19.241.258.80.430.60
 Silt plus clay OCNT−21.127.472.64.0010.6
MP−21.127.272.84.1011.0

10–20 cm
 Coarse POCNT−20.825.374.70.100.29
MP−20.725.874.20.120.34
 Fine POCNT−19.530.469.60.140.33
MP−19.827.372.70.260.63
 Silt plus clay OCNT−21.116.183.92.3412.1
MP−21.117.182.92.5412.4

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