Soil carbon dioxide and methane fluxes from forests and other land use types in an African tropical montane region

Wanyama, I.; Pelster, D. E.; Butterbach-Bahl, K.; Verchot, L. V.; Martius, C.; Rufino, M. C.

doi:10.1007/s10533-019-00555-8

Table 2 Mean (± SE) soil chemical and physical properties in 0–0.05, 0.05–0.2 and 0.2–0.3 m soil depth for different land use types at the smallholder and tea estate sites in the SW Mau forest area, Kenya

From: Soil carbon dioxide and methane fluxes from forests and other land use types in an African tropical montane region

Soil depth (m)	Site	Land use	Plot code	Total Nitrogen (%)	Total Carbon (%)	SOC (Mg ha⁻¹)	SON (Mg ha⁻¹)	C:N ratio	pH	Bulk density (g cm⁻³)	Clay (%)	Sand (%)
0–0.05	Smallholder	Forest	SHF 1-3	1.24 ± 0.05a	13.4 ± 0.7a	47.0 ± 2.3a	4.3 ± 0.2a	10.8 ± 0.1b	6.6 ± 0.1a	0.65 ± 0.03b	22 ± 0.1c	46 ± 2.0a
	Smallholder	Grazing	SHG 1-3	0.74 ± 0.03b	7.9 ± 0.3b	37.6 ± 1.2b	3.7 ± 0.1b	10.9 ± 0.1b	6.0 ± 0.1b	0.94 ± 0.02a	33 ± 1.8b	39 ± 2.4b
	Smallholder	Tea	SHT 1-3	0.69 ± 0.03b	8.4 ± 0.5b	29.7 ± 1.8c	2.5 ± 0.1c	11.9 ± 0.2a	5.4 ± 0.21b	0.72 ± 0.05b	45 ± 1.0c	24 ± 2.0c
	Tea estate	Forest	TEF 1-3	0.94 ± 0.04a	9.5 ± 0.5a	28.6 ± 1.5b	2.8 ± 0.1a	10.1 ± 0.1b	5.1 ± 0.01a	0.60 ± 0.03b	49 ± 1.5b	21 ± 1.3a
	Tea estate	Eucalyptus	TEP 1-3	0.61 ± 0.02b	7.0 ± 0.3b	25.9 ± 1.0b	2.3 ± 0.1b	11.3 ± 0.7a	5.4 ± 0.11a	0.74 ± 0.03a	61 ± 1.8a	18 ± 0.3a
	Tea estate	Tea	TET 1-3	0.91 ± 0.10a	10.6 ± 1.3a	36.0 ± 4.4a	3.0 ± 0.4a	12.0 ± 0.1a	3.8 ± 0.06b	0.67 ± 0.04b	65 ± 4.8a	19 ± 2.9a
0.05–0.2	Smallholder	Forest	SHF 1-3	0.58 ± 0.02a	5.3 ± 0.12b	63.9 ± 1.5b	6.9 ± 0.2b	9.3 ± 0.2b	6.1 ± 0.09a	0.80 ± 0.03b	49 ± 1.3a	21 ± 0.7b
	Smallholder	Grazing	SHG 1-3	0.64 ± 0.03a	6.7 ± 0.3a	91.9 ± 3.7a	8.8 ± 0.5a	10.6 ± 0.2b	6.0 ± 0.07ab	0.93 ± 0.02a	40 ± 4.2b	30 ± 3.1a
	Smallholder	Tea	SHT 1-3	0.46 ± 0.01b	5.1 ± 0.1b	64.1 ± 1.0b	5.8 ± 0.2c	11.2 ± 0.3b	5.7 ± 0.1b	0.84 ± 0.03b	49 ± 1.0a	22 ± 0.0b
	Tea estate	Forest	TEF 1-3	0.44 ± 0.02a	4.3 ± 0.2b	40.1 ± 3.6c	4.5 ± 0.2b	9.7 ± 0.2b	4.8 ± 0.1b	0.68 ± 0.04b	48 ± 1.2a	24 ± 3.4a
	Tea estate	Eucalyptus	TEP 1-3	0.42 ± 0.02a	4.6 ± 0.2b	54.3 ± 2.1b	5.2 ± 0.2a	10.7 ± 0.2b	5.5 ± 0.1a	0.79 ± 0.03a	57 ± 0.7a	18 ± 1.2b
	Tea estate	Tea	TET 1-3	0.46 ± 0.01a	5.7 ± 0.2a	62.4 ± 3.2a	5.1 ± 0.2a	12.8 ± 0.3a	4.1 ± 0.05c	0.74 ± 0.02a	53 ± 1.8a	21 ± 2.9ab
0.2–0.3	Smallholder	Forest	SHF 1-3	0.47 ± 0.03a	4.5 ± 0.21b	35.4 ± 1.7c	3.7 ± 0.3b	9.7 ± 0.30b	5.7 ± 0.10b	0.79 ± 0.02b	51 ± 3.7ab	21 ± 1.8a
	Smallholder	Grazing	SHG 1-3	0.49 ± 0.02a	5.4 ± 0.16a	51.7 ± 1.5a	4.7 ± 0.2a	11.2 ± 0.29a	6.0 ± 0.04a	0.96 ± 0.02a	47 ± 5.1b	25 ± 2.1a
	Smallholder	Tea	SHT 1-3	0.47 ± 0.04a	5.3 ± 033a	44.9 ± 2.8b	4.0 ± 0.4a	11.5 ± 0.38a	5.9 ± 0.07ab	0.85 ± 0.03b	59 ± 5.0a	16 ± 2.0b
	Tea estate	Forest	TEF 1-3	0.43 ± 0.01a	4.3 ± 0.15b	30.6 ± 1.1b	3.1 ± 0.1a	9.9 ± 0.18c	4.8 ± 0.09b	0.71 ± 0.04b	53 ± 0.7b	20 ± 0.1b
	Tea estate	Eucalyptus	TEP 1-3	0.37 ± 0.02b	3.9 ± 0.16b	32.5 ± 1.3b	3.0 ± 0.1a	11.0 ± 0.18b	5.5 ± 0.05a	0.82 ± 0.03a	59 ± 0.7a	19 ± 0.7b
	Tea estate	Tea	TET 1-3	0.45 ± 0.01a	5.6 ± 0.18a	41.4 ± 1.3a	3.3 ± 0.1a	12.5 ± 0.16a	4.1 ± 0.05c	0.74 ± 0.02b	52 ± 0.1b	26 ± 1.2c

Same letters following means indicate no significant different among the land use types within the soil depth and site (p > 0.05)

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