Table 3 Loadings and weights of soil quality factors for different vegetation communities under three desertification control models.
Index | The first principal component | The second principal component | ||
|---|---|---|---|---|
Values of component capacity | Weights | Values of component capacity | weights | |
Organic matter | 0.288 | 0.068 | − 0.24 | 0.006 |
pH value | − 0.29 | 0.067 | 0.17 | 0.012 |
Total nitrogen | 0.31 | 0.064 | − 0.08 | 0.018 |
Total phosphorus | 0.269 | 0.036 | 0.316 | 0.045 |
Available nitrogen | 0.3 | 0.066 | − 0.135 | 0.015 |
Available phosphorus | 0.268 | 0.036 | 0.31 | 0.045 |
Available potassium | 0.26 | 0.069 | − 0.35 | 0.004 |
Total number of microorganisms | 0.308 | 0.062 | − 0.04 | 0.022 |
Bacteria number | 0.307 | 0.064 | − 0.09 | 0.018 |
Fungi number | 0.188 | 0.012 | 0.48 | 0.050 |
Actinomycetes number | 0.141 | 0.002 | 0.56 | 0.052 |
Microbial biomass carbon | 0.3 | 0.063 | − 0.07 | 0.019 |
Microbial biomass nitrogen | 0.3 | 0.058 | 0.31 | 0.027 |
Rate of variance/% | 79.160 | 18.718 | ||
Cumulative rate/% | 79.160 | 97.878 | ||
