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. Author manuscript; available in PMC: 2010 Oct 7.
Published in final edited form as: Ecosystems. 2008 Dec;11(8):1352–67. doi: 10.1007/s10021-008-9198-0

Table 2.

Annual Soil Respiration: Model Parameters, r2 of Model Fit, Number of Observations, Validation (r2, Slopes and Intercepts of Linear Fits between Modelled and Independently Observed Rates of Soil Respiration), Mean Absolute Error (MAE) and Model Efficiency (ME), r2 of Residuals of Modelled Versus Observed Soil Respiration in Relation to Soil Water Content (SWC), Modelled Annual Soil Respiration Based on Single and on Bin-Averaged Data and Confidence Interval of Annual Soil Respiration (CI, in % Percent of Annual Total Obtained from Bin-Averaged Data)

Site Model Model parameters r 2 n Validation
 MAE ME Residuals
versus
SWC
r2 		Annual Rs
(g m−2 y−1)
Total		 CI (%)
r 2 Slope Intercept
Amplero 1 a = 6.05, b = 18.18, k = 0.32 0.37 120 0.39 1.35 −0.71 1.59 0.37 0.29 1305 40.9
Alinya 3 Rs10 = 1.99, Eo = 236.9, c = −11.187, d = 0.859 0.47 806 0.50 0.82 0.36 7.85 0.35 0.00 494 17.1
Monte Bondone 3 Rs10 = 5.39, Eo = 384.3, c = −0.0059, d = 0.035 0.74 430 0.82 1.09 −0.70 7.55 0.68 0.01 1743 17.1
Oensingen 1 1 a = 14.84, b = 17.22, k = 0.17 0.45 131 0.44 1.02 1.38 2.76 0.75 0.00 1988 87.4
Stubai 1 1 a = 12.69, b = 23.29, k = 0.25 0.66 380 0.71 1.01 −0.10 1.22 0.97 0.04 1792 11.2
Stubai 3 1 a = 5.33, b = 8.95, k = 0.18 0.48 1066 0.51 1.03 −0.15 0.81 0.83 0.10 729 9.4
Berchtesgaden 1 2 Rs10 = 3.83, Eo = 310.2 0.80 55 0.68 0.86 0.77 0.95 0.96 0.03 1378 22.0
Berchtesgaden 2 2 Rs10 = 2.86, Eo = 260.2 0.77 68 0.67 0.93 0.34 0.82 0.97 0.05 907 32.0
Berchtesgaden 3 2 Rs10 = 3.16, Eo = 288.7 0.77 55 0.84 0.98 0.65 0.90 0.96 0.01 1070 19.7
Carlow 3 Rs10 = 3.19, Eo = 269.8, c = −7.109, d = 0.422 0.44 69 0.34 0.90 0.22 8.70 0.50 0.06 1166 69.7
Auchencorth Moss 2 Rs10 = 2.09, Eo = 541.3 0.65 22 0.47 0.69 0.53 0.46 0.91 0.06 529 62.9
Cow Park 1 a = 5.65, b = 520.23, k = 0.84 0.23 1044 0.19 0.81 0.98 1.84 0.82 0.09 1246 12.5
Varriö 1 a = 1.71, b = 17.15, k = 0.11 0.45 26 0.39 0.88 0.08 0.13 0.83 n.a. 58 23.9

Model numbers refer to Eqs. 1-3 for logistic function, Lloyd and Taylor function and Lloyd and Taylor function combined with a Gompertz-function, respectively, as described in the section “Methods”.