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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