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Table 5 Decomposition of the simple correlation coefficient between soil active organic carbon components and vegetation-soil factors in saltmarsh 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

MBC

SWC

0.468

− 0.080

 

0.006

0.062

− 0.342

− 0.418

− 0.122

− 0.149

− 0.372

− 0.044

0.080

− 1.299

SBD

− 0.454

− 0.010

0.050

 

0.075

− 0.414

− 0.505

− 0.148

− 0.180

− 0.451

− 0.053

0.096

− 1.530

PH

0.190

0.546

0.039

0.005

0.049

 

− 0.424

− 0.124

− 0.151

− 0.378

− 0.045

0.081

− 0.949

TN

0.532

0.666

− 0.047

− 0.006

− 0.058

0.322

 

0.156

0.190

0.476

0.056

− 0.102

0.987

TP

0.398

0.195

− 0.038

− 0.005

− 0.047

0.258

0.315

 

− 0.049

− 0.122

− 0.014

0.026

0.324

DOC

SWC

0.555

0.002

 

− 0.020

0.004

0.011

0.031

− 0.285

  

− 0.001

 

− 0.260

SBD

0.155

0.032

− 0.001

 

0.005

0.013

0.038

− 0.345

  

− 0.001

 

− 0.292

EC

− 0.658

− 0.006

0.000

0.007

 

0.013

0.038

− 0.344

  

− 0.001

 

− 0.288

PH

0.223

− 0.017

− 0.001

− 0.016

0.003

 

0.032

− 0.290

  

− 0.001

 

− 0.272

TN

− 0.107

− 0.050

0.001

0.019

− 0.004

− 0.010

 

0.364

  

0.001

 

0.372

TP

0.027

0.455

0.001

0.015

− 0.003

− 0.008

− 0.024

     

− 0.019

EOC

SWC

− 0.142

0.045

 

− 0.224

− 0.091

0.353

0.130

− 0.146

− 0.103

0.354

− 0.069

− 0.039

0.166

SBD

0.295

0.357

− 0.028

 

− 0.110

0.427

0.158

− 0.177

− 0.124

0.428

− 0.083

− 0.047

0.443

EC

0.065

0.145

0.009

0.074

 

0.426

0.157

− 0.176

− 0.124

0.427

− 0.083

− 0.047

0.663

PH

− 0.424

− 0.563

− 0.022

− 0.175

− 0.071

 

0.132

− 0.148

− 0.104

0.359

− 0.070

− 0.039

− 0.139

TN

− 0.199

− 0.208

0.027

0.211

0.086

− 0.332

 

0.187

0.131

− 0.452

0.088

0.050

− 0.005

TP

0.189

0.233

0.021

0.169

0.069

− 0.266

− 0.098

 

− 0.034

0.116

− 0.023

− 0.013

− 0.059

D

− 0.795

-0.564

0.029

0.227

0.092

− 0.358

− 0.132

0.148

0.104

 

0.014

0.008

0.132

FVC

0.370

0.110

0.027

0.214

0.087

− 0.337

− 0.125

0.140

0.098

− 0.338

 

0.039

− 0.195

POC

SWC

− 0.142

0.045

 

− 0.224

− 0.091

0.353

0.130

− 0.146

− 0.103

0.354

− 0.069

− 0.039

0.166

SBD

0.295

0.357

− 0.028

 

− 0.110

0.427

0.158

− 0.177

− 0.124

0.428

− 0.083

− 0.047

0.443

PH

− 0.424

− 0.563

− 0.022

− 0.175

− 0.071

 

0.132

− 0.148

− 0.104

0.359

− 0.070

− 0.039

− 0.139

TN

− 0.199

− 0.208

0.027

0.211

0.086

− 0.332

 

0.187

0.131

− 0.452

0.088

0.050

− 0.005

TP

0.189

0.233

0.021

0.169

0.069

− 0.266

− 0.098

 

− 0.034

0.116

− 0.023

− 0.013

− 0.059

D

– 0.795

− 0.564

0.029

0.227

0.092

− 0.358

− 0.132

0.148

0.104

 

0.014

0.008

0.132

FVC

0.370

0.110

0.027

0.214

0.087

− 0.337

− 0.125

0.140

0.098

− 0.338

 

0.039

− 0.195

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