Figures (5)  Tables (4)

    • Figure 1. 

      Heat map of correlations between indicators.

    • Figure 2. 

      Visualization of earthquake events from 2011 to 2023.

    • Figure 3. 

      Changes in SVI of prefecture-level cities in Sichuan Province from 2003 to 2013.

    • Figure 4. 

      Relationship between SVI and the floating population.

    • Figure 5. 

      Relationship between migration and distance.

    • Feature PC1 PC2
      Population −0.419 −0.798
      Population aged 0−14 −0.826 −0.492
      Population aged 15−64 0.762 0.614
      Population aged 64 and above −0.331 −0.832
      Gender ratio 0.103 0.916
      Urban per capita annual income 0.910 0.402
      Rural per capita annual income 0.917 0.373
      Housing consumption index compared with the
      previous year      		 −0.760 0.443
      Birth rate −0.451 −0.608
      Government fiscal revenue 0.880 0.438
      Population education ratio 0.767 0.609
      GDP per capita 0.900 0.407
      Consumption level 0.907 0.377
      Agricultural land as a percentage of total land area −0.887 −0.305

      Table 1. 

      Rotated component matrix.

    • Year PC1 score PC2 score
      2005 −12.520 −10.386
      2006 −6.203 −1.458
      2007 −2.0747 −0.175
      2008 2.503 2.436
      2009 6.644 1.121
      2010 11.650 8.464

      Table 2. 

      Principal component scores for each year.

    • Year SVI score
      2005 −10.815
      2006 −4.871
      2007 −1.588
      2008 2.209
      2009 5.159
      2010 9.905

      Table 3. 

      SVI scores by year.

    • Index Sum of squares
      for error (SSE)      		 Sum of squares
      for total (SST)      		 Goodness of fit
      Value 18,056.63 2,472,279 0.9927

      Table 4. 

      Results of model evaluation.