Nugget/Sill of SOC and TN in I and III, and Nugget/Sill of C/N in I are less than 25%, which indicates there are high spatial autocorrelation.

• 人工林和原生林的土壤有机碳和全氮及人工林的碳氮比的块金值/基台值均＜25%25，具有强烈的空间相关性；