Chemical and Biological Technologies in Agriculture

Table 5 Effect of slope position on SOC concentration, SOC stock, and soil bulk density (Mean ± SEM)

From: Exclosures backed up with community-based soil and water conservation practices increased soil organic carbon stock and microbial biomass carbon distribution, in the northern highlands of Ethiopia

SWC measures	Soil parameter	Slope positions
SWC measures	Soil parameter	Foot slope	Middle slope	Upper slope
Non-conserved grazing lands	SOC (%)	1.9 ± 0.1^c	2.1 ± 0.1^ce	1.7 ± 0.1^c
	Bulk density (kg m⁻³)	1199 ± 40^bcd	1310 ± 40^ad	1315 ± 40^a
	SOC stock (Mg ha⁻¹)	18 ± 2^ac	15 ± 2^c	15 ± 2^c
Terraces	SOC (%)	2.6 ± 0.1^abd	2.4 ± 0.1^bd	2.4 ± 0.1^de
	Bulk density(kg m⁻³)	1262.9 ± 40^abcd	1276.6 ± 40^acd	1240.8 ± 40^abcd
	SOC stock (Mg ha⁻¹)	22 ± 2^ab	20 ± 2^ac	22 ± 2^ab
Exclosures + terraces	SOC (%)	2.9 ± 0.1^a	2.8 ± 0.1^a	2.9 ± 0.1^a
	Bulk density(kg m⁻³)	1218 ± 40^abcd	1233 ± 40^abcd	1231 ± 40^abcd
	SOC stock (Mg ha⁻¹)	31 ± 2^de	26 ± 2^bde	30 ± 2^e
Exclosures alone	SOC (%)	2.7 ± 0.1^a	2.7 ± 0.1^ab	2.8 ± 0.1^ab
	Bulk density (kg m⁻³)	1315 ± 40^a	1162 ± 40^b	1184 ± 40^bc
	SOC stock (Mg ha⁻¹)	25 ± 2^bd	22 ± 2^ab	23 ± 2^ab

Means of each soil parameter followed by the same letter do not differ significantly at P ≤ 0.05

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