Fig. 3

Ternary plots of soil bacteria and fungi in different soil layers under N addition. “B” and “F” represent the bacteria and fungi, the acronym of “1”, “2”, and “3” represent soil depths of 0 ~ 5 cm, 5 ~ 10 cm, and 10 ~ 20 cm. Additionally, CK, LN, MN, and HN correspond to control and three N addition levels, respectively. Figure (a–h) depict ternary plots for soil bacterial and fungal degree of aggregation and fragmentation across different soil layers under CK, LN, MN, and HN, respectively.