Enhancing soil organic carbon, particulate organic carbon and microbial biomass in semi-arid rangeland using pasture enclosures

Table 2 Soil organic carbon and total nitrogen concentrations at three depths under different grazing management systems

Depth (cm)	Total soil organic carbon (g kg⁻¹)			Total nitrogen (g kg⁻¹)
Depth (cm)	OGR	CGE	GDE	OGR	CGE	GDE
0–10	4.93 ± 0.69Ba	6.22 ± 0.78Aa	6.61 ± 0.89Aa	0.53 ± 0.07Ba	0.63 ± 0.08Aa	0.65 ± 0.08Aa
10–20	4.88 ± 0.65Ba	5.86 ± 0.67Aa	6.28 ± 0.99Aa	0.58 ± 0.11Ba	0.63 ± 0.08Aa	0.61 ± 0.07ABa
20–40	4.36 ± 0.74Bb	5.57 ± 0.57Ab	5.47 ± 0.77Ab	0.52 ± 0.10Bb	0.61 ± 0.08Aa	0.59 ± 0.07Ab
Pooled mean	4.72 ± 0.73B	5.88 ± 0.72A	6.12 ± 1.00A	0.54 ± 0.09B	0.62 ± 0.08A	0.62 ± 0.08A

Values are mean ± SD (n = 9). Values with different uppercase letters across the rows (grazing systems) and the lowercase letters within columns (soil depths) are significantly different at P < 0.05
OGR Open grazing rangeland, CGE contractual grazing enclosure, GDE grazing dominated enclosure

ISSN: 1472-6785