R2, coefficient of determination. P-value, parameter testing regression significant.
* Significant at the 0.05 probability level. ** Significant at the 0.01 probability level.
Appendix A Site characteristics, including soil CO2 flux (F, μmol m-2s-1), moisture (M, m3m-3), temperature (T, ℃), soil organic carbon storage (SOC, g kg-1).