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Table 7 The PCA results

From: Study on the linear absent section ratio (L-ASR) of earthen sites and anthropogenic influence from the perspective of population density

Eigenanalysis of the Correlation Matrix
Eigenvalue 2.0387 0.9497 0.7781 0.2335
Proportion 0.510 0.237 0.195 0.058
Cumulative 0.510 0.747 0.942 1.000
Eigenvectors
Variable PC1 PC2 PC3 PC4
Population density 0.259 − 0.906 − 0.326 − 0.078
Annual rain − 0.627 − 0.139 − 0.281 0.713
Annual wind speed 0.617 − 0.020 0.381 0.688
Number of Earthquakes 0.399 0.400 − 0.818 0.107