Carbon Stock and Soil Characteristics under Expansive Shrubs in the Dry Afromontane Forest in Northern Ethiopia

Table 3

Mean (±SD) physicochemical characteristics of soils under both invaded and uninvaded vegetation conditions and results of independent t-test (at  = 0.05).

Soil variable	Vegetation conditions		value
	Invaded	Uninvaded
Sand (%)	30.15 ± 11.50	18.80 ± 7.07	≤0.001
Silt (%)	40.20 ± 7.82	42.05 ± 8.29	0.472
Clay (%)	29.65 ± 12.61	39.15 ± 9.53	0.011
pH	7.85 ± 0.48	8.14 ± 0.38	0.044
Carbon (%)	3.16 ± 0.69	4.82 ± 0.75	≤0.001
Total nitrogen (%)	0.11 ± 0.02	0.096 ± 0.02	0.160
Available phosphorus (%)	0.022 ± 0.01	0.029 ± 0.01	0.106
Potassium (mg/g)	0.16 ± 0.10	0.21 ± 0.1	0.048
Calcium (mg/g)	8.50 ± 3.90	7.20 ± 3.7	0.295
Sodium (mg/g)	0.19 ± 0.04	0.23 ± 0.05	0.016
Magnesium (mg/g)	0.32 ± 0.10	0.43 ± 0.10	<0.001
Manganese (mg/g)	0.11 ± 0.03	0.13 ± 0.04	0.014
Iron (mg/g)	3.1 ± 1.10	3.8 ± 0.47	≤0.001
Copper (mg/g)	0.020 ± 0.01	0.024 ± 0.01	0.140
Zinc (mg/g)	0.020 ± 0.01	0.022 ± 0.01	0.335