Table 5 Correlation coefficients between heavy metal concentrations and topographic factors.

From: Remote sensing inversion on heavy metal content in salinized soil of Yellow River Delta based on Random Forest Regression—a case study of Gudao Town

 

Mn

Ni

As

Cu

Zn

Pb

Cr

DEM

0.050

− 0.044

0.027

− 0.084

0.047

0.062

− 0.064

Aspect

− 0.054

− 0.180

− 0.307

− 0.299

− 0.111

0.017

− 0.369

Slope

0.025

− 0.026

− 0.091

− 0.031

0.071

0.134

− 0.101

  1. Significant values are in bold.
  2. *Significant correlation; **extremely significant correlation.
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