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Table 5 Linear correlation analysis of SOC, TN, POC, PON, MBC and MBN in the three soil depths (n = 81)

From: Enhancing soil organic carbon, particulate organic carbon and microbial biomass in semi-arid rangeland using pasture enclosures

Depth (cm) SOC TN POC PN MBC MBN
0–10
 SOC      
 TN 0.71**     
 POC 0.86** 0.70**    
 PN 0.06 0.10 0.04   
 MBC 0.57** 0.46** 0.63** 0.18  
 MBN 0.32** 0.10 0.38** 0.01 0.21*
10–20
 SOC      
 TN 0.54**     
 POC 0.81** 0.42**    
 PN 0.29** 0.14 0.25*   
 MBC 0.40** 0.06 0.57** 0.15  
 MBN 0.04 0.10 0.03 0.16 0.18
20–40
 SOC      
 TN 0.66**     
 POC 0.91** 0.65**    
 PN 0.16 0.19 0.14   
 MBC 0.30** 0.09 0.41** 0.10  
 MBN 0.17 0.14 0.17 0.00 0.05
  1. Values are correlation coefficient, r
  2. SOC total soil organic carbon, TN total nitrogen, POC particulate organic carbon, PON particulate organic nitrogen, MBC microbial biomass carbon, MBN microbial biomass nitrogen
  3. * Denotes significant correlation at the 0.05 level
  4. ** Denotes significant correlation at the 0.01 level: others are not significant