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Table 2 Parameters and coefficient of determination (r 2) of the power function model fitting the change of soil heterotrophic respiration (R h) with incubation time in three subtropical forest soils

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

   PEa   SS CB
Initial R h (R 1) b Power (k) b r 2 Initial R h (R 1) Power (k) r 2 Initial R h (R 1) Power (k) r 2
Temperature (oC)
 10 0.628 0.236 0.720 0.582 0.136 0.612 0.747 0.268 0.555
 17 0.768 0.243 0.793 0.702 0.134 0.581 1.137 0.307 0.946
 24 0.944 0.238 0.760 0.998 0.167 0.764 1.456 0.293 0.905
 31 1.276 0.253 0.855 1.647 0.266 0.963 2.054 0.268 0.942
 38 1.712 0.252 0.821 1.913 0.232 0.965 2.523 0.242 0.937
Moisture (% water holding capacity)
 20% 0.494 0.195 0.692 0.514 0.159 0.874 0.576 0.201 0.708
 40% 0.847 0.270 0.858 1.038 0.206 0.913 1.179 0.278 0.917
 60% 1.423 0.232 0.739 2.118 0.202 0.901 2.928 0.328 0.863
 80% 1.578 0.266 0.893 1.262 0.201 0.891 2.364 0.314 0.922
 100% 1.059 0.259 0.917 0.913 0.180 0.861 1.362 0.255 0.909
  1. aPE, SS, and CB represent the P. elliottii plantation, S. superba plantation, and conifer and broadleaf mixed forest soils, respectively
  2. bTo derive the empirical relation for each temperature level, R h under the five moisture levels were averaged; to derive that for each moisture level, R h under the five temperature levels were averaged. All models are significant at α = 0.05