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Table 1 Comparison of three statistical models relating heterotrophic soil respiration (R h) to incubation time (t) in three subtropical forest soils

From: Quantifying the short-term dynamics of soil organic carbon decomposition using a power function model

Modela   PEb SS CB
Log-linear a, b 1.0290,−0.1250 1.2802,−0.1788 1.8248,−0.3020
R h = a + bLog(t) AIC −57.68 −70.52 −48.08
  r 2 0.51 0.90 0.88
Exponential a, b 0.4152,−0.0207 0.5894,−0.0173 0.9690,−0.0267
R h = aExp(bt) AIC −50.94 −50.40 −38.04
  r 2 0.67 0.62 0.71
Power a, b 0.9754,−0.2355 1.1125,−0.1862 2.4384,−0.2782
R h = at b AIC −61.27 −75.14 −54.28
  r 2 0.82 0.93 0.91
  1. aIn deriving the impirical models, one R h data point at each measurement day was the average of the R h measurements under the 25 experimental treatments (i.e., 5 temperatures × 5 moistures)
  2. bPE, SS, and CB represent the P. elliottii plantation, S. superba plantation, and conifer and broadleaf mixed forest soils, respectively