Measurements of Soil Carbon Dioxide Emissions from Two Maize Agroecosystems at Harvest under Different Tillage Conditions

Table 2

Soil and litter organic carbon content in the two experimental sites. In both sites, soil type was Luvisol, sandy loam, subacid, and well drained. CT = conventional tillage site; NT = no-tillage site.

	CT site	NT site
Soil type	Luvisol, sandy loam, sub acid, and well drained	Luvisol, sandy loam, sub acid, and well drained
Bulk density of the soil	1.57 ± 0.10 g cm^−3	1.57 ± 0.07 g cm^−3
Organic carbon of the topsoil (0–30 cm)	10.3 ± 1.8 g kg^−1	9.5 ± 0.2 gC kg^−1
Carbon stock in the topsoil	48.7 ± 6.3 t ha^−1	44.8 ± 5.6 t ha^−1
Organic carbon in the microbial biomass	55.8 ± 16.2 μgC g^−1	97.4 ± 41.5 μgC g^−1
Litter mass	No litter	1.70 ± 0.4 kg m^−2
Organic carbon in the litter	No litter	237.9 ± 90 gC kg^−1
Carbon stock in the litter	No litter	4.2 ± 2.0 t ha^−1