“…Also, signi cant differences in the concentrations of soil TC, TN, C/N, AN, TP, AP, and AK differed signi cantly among PKSZ, RPL, and PSC (Table 1), which were highly similar to those reported by (hang et al ( 2014). What's more, compared to PKSZ and PSC, RPL could better improve soil TC, TN, TP, and AP (Table 1), which was consistent with previous studies demonstrated that broadleaf forest could improve soil nutrients than coniferous forest (Deng et al, 2019a;Deng et al, 2019b). As we all know, the turnover of litter and ne roots is the main way of soil organic matter input, and the content of organic matter can affect the process of nitrogen transformation and accumulation.…”