Fig. 5From: Differences of SOC storage and stability between soil layers influenced by long-term fertilization in a typical paddy soil of Southern ChinaThe SOC storage of active and passive C pools at three soil depths in different treatments. Note: Different lower-case letters indicate significant differences among treatments at each soil depth (p < 0.05), different upper-case letters indicate significant differences among treatments at the whole soil profile of 0–60 cm (p < 0.05)Back to article page