There are sliced smooth distributions of SOC and TN in I and III, while there are fragmentized distributions of SOC, TN and C/N in II.

• 人工林和原生林土壤有机碳、全氮含量呈片状平缓变化分布，次生林土壤有机碳、全氮含量及碳氮比呈支离破碎的斑块状分布。