pH

EC

OC

Fe

Zn

Cu

Pb

Cd

Mn

pH

1

−0.688^**

−0.845^**

−0.602^*

−0.588^*

−0.507^*

−0.676^**

−0.893^**

−0.247

EC

1

0.453

0.528^*

0.482^*

0.395

0.405

0.709^**

0.462

OC

1

0.549^*

0.494^*

0.424

0.693^**

0.791^**

0.354

Fe

1

0.950^**

0.919^**

0.855^**

0.778^**

0.270

Zn

1

0.977^**

0.831^**

0.783^**

0.081

Cu

1

0.737^**

0.716^**

−0.037

Pb

1

0.785^**

0.270

Cd

1

0.268

Mn

1