(TOCs) decreased sharply when the temperature reached the thermophilic level. Guo et al. (2012) designed a series of experiments that reached the thermophilic phase (>50 C) within the first
1–2 d, due to the metabolism of psychrophilic and mesophilic microbes; it remained above 50 C for a long time and a lower temperature would lead to a higher electrical conductivity (EC), a slower organic matter (OM) degradation rate, and a lower N content in the cooling phase.