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Table 4 Decomposition of the simple correlation coefficient between soil organic carbon and vegetation-soil factors in a salt marsh wetland

From: Characteristics of soil organic carbon fractions in four vegetation communities of an inland salt marsh

Items

Index

correlation coefficient

Direct path factor

Indirect path factor

SWC

SBD

EC

PH

TN

TP

H

D

FVC

UB

合计

SOC

SWC

0.868

0.033

 

0.177

0.068

0.082

− 0.110

0.197

0.028

− 0.014

0.011

− 0.480

− 0.041

SBD

-0.501

-0.282

− 0.021

 

− 0.251

0.128

− 0.170

0.304

0.043

− 0.022

0.017

− 0.742

− 0.714

EC

0.121

0.331

0.007

− 0.058

 

0.127

− 0.170

0.304

0.043

− 0.022

0.017

− 0.740

− 0.492

PH

-0.395

− 0.168

− 0.016

0.138

− 0.163

 

− 0.143

0.255

0.036

− 0.018

0.015

− 0.623

− 0.518

TN

0.434

0.224

0.019

− 0.166

0.195

− 0.099

 

− 0.321

− 0.046

0.023

− 0.018

0.783

0.371

TP

0.195

− 0.401

0.016

− 0.133

0.157

− 0.079

0.106

 

0.012

− 0.006

0.005

− 0.201

− 0.126

D

0.661

0.029

0.021

− 0.179

0.210

− 0.107

0.142

− 0.255

− 0.036

 

− 0.003

0.127

− 0.079

FVC

0.519

− 0.023

0.020

− 0.169

0.198

− 0.101

0.134

− 0.240

− 0.034

0.017

 

0.615

0.441

UB

0.665

0.978

0.019

− 0.162

0.190

− 0.096

0.128

− 0.230

− 0.033

0.017

− 0.013

 

− 0.180

  1. For a definition of the parameter abbreviations see Table 1