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Table 5 Model statistics for the linear relationships (y = a+bx) between daily CH4, CO2 and environmental variables: soil temperature and water filled pore space (WFPS) for land use types at two sites in the Mau forest area, Kenya

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

Site GHG Gas Variable Land use Plot code Slope (b) Intercept (a) R2 n p-value
Smallholder CH4 Temperature Forest SHF 1–3 − 0.008 0.09 0.31 166 < 0.001
    Grazing SHG 1–3 0.003 − 0.070 0.02 164 0.08
    Tea SHT 1–3 − 0.001 0.002 0.005 163 0.38
Tea estate    Forest TEF 1–3 − 0.0033 − 0.019 0.004 180 0.43
    Plantation TEP 1–3 − 0.0088 0.107 0.03 168 0.04
    Tea TET 1–3 − 0.009 0.128 0.03 177 0.02
Smallholder   WFPS Forest SHF 1–3 0.0008 − 0.007 0.25 175 < 0.001
    Grazing SHG 1–3 − 0.0001 0.002 0.008 189 0.24
    Tea SHT 1–3 0.0002 − 0.028 0.04 180 0.006
Tea estate    Forest TEF 1–3 0.0007 − 0.010 0.11 186 < 0.001
    Plantation TEP 1–3 0.0009 − 0.074 0.06 178 0.001
    Tea TET 1–3 0.0005 − 0.034 0.02 182 0.05
Smallholder CO2 Temperature Forest SHF 1–3 10.18 − 66.5 0.09 171 < 0.001
    Grazing SHG 1–3 − 11.1 527.8 0.01 172 0.143
    Tea SHT 1–3 14.27 − 131.4 0.15 176 < 0.001
Tea estate    Forest TEF 1–3 13.3 − 104.8 0.13 166 < 0.001
    Plantation TEP 1–3 6.05 − 11.6 0.05 165 0.003
    Tea TET 1–3 5.2 − 11.8 0.06 245 < 0.001
Smallholder   WFPS Forest SHF 1–3 0.224 77.9 0.01 185 0.120
    Grazing SHG 1–3 1.563 231.6 0.05 188 < 0.001
    Tea SHT 1–3 0.74 56.9 0.08 185 < 0.001
Tea estate    Forest TEF 1–3 1.01 52.0 0.22 174 < 0.001
    Plantation TEP 1–3 0.63 54.9 0.12 184 < 0.001
    Tea TET 1–3 0.46 44.1 0.08 182 < 0.001