Parameter

Curve model

Variable

R2

p

CaCO3 weighted content

(y1)

x: slope

0.563

<0.01

x: plane curvature

0.235

<0.05

x: profile curvature

0.236

<0.05

0.631

<0.01

CaCO3 density

(y2)

x: altitude

0.686

<0.01

x: gradient

0.460

<0.01

x: aspect

0.265

<0.05

0.734

<0.01