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. 2020 Oct 12;8:e9702. doi: 10.7717/peerj.9702

Table 3. Correlations among soil C:N:P stoichiometric ratios and plant community attributes in 2018.

Variables	C:N	N:P	C:P
Tree biomass	−0.002^NS	−0.887^**	−0.833^**
Understory plant biomass	−0.348^NS	0.894^**	0.516^NS
Litter stock	0.862^**	−0.212^NS	0.278^NS
Total aboveground biomass	−0.006^NS	−0.875^**	−0.825^**
Tree biomass/Total aboveground biomass	0.371^NS	−0.954^**	−0.680^*
Understory plant biomass/Total aboveground biomass	−0.502^NS	0.910^**	0.563^NS
Fine root biomass	-.632^*	0.292^NS	−0.044^NS
Litter carbon	−0.595^*	−0.279^NS	−0.591^*
Litter nitrogen	0.149^NS	0.271^NS	0.356^NS
Litter phosphorus	0.03^NS	−0.587^*	−0.535^NS
Litter C:N	−0.339^NS	−0.434^NS	−0.610^*
Litter N:P	0.063^NS	0.546^NS	0.561^NS
Litter C:P	−0.455^NS	0.423^NS	0.143^NS
Richness index	−0.129^NS	0.967^**	0.833^**
Margalef index	0.054^NS	0.902^**	0.878^**
Shannon-Wiever index	0.193^NS	0.851^**	0.906^**
Simpson index	−0.35^NS	−0.730^**	−0.876^**
Pielou index	0.42^NS	0.670^*	0.860^**

Notes.

NS: Not significant

^*

P < 0.05

^**

P < 0.001