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Table 1 Basic Characteristics of Samples

Indicator

Indicator Value

Sample Size

Percentage (%)

Indicator

Indicator Value

Sample Size

Percentage (%)

Gender

457

67.01

Education Level

Primary school and below

281

41.20

225

32.99

Junior high school

328

48.20

Age

Under 39 years old

73

10.70

High school and above

73

10.60

30-50 years old

110

16.12

Household income / 10,000 yuan

Below 1

122

17.89

50-60 years old

291

42.67

1-4

255

37.39

60 and above

208

30.51

4-8

220

32.26

8 and above

85

12.46

Table 2 Variable Selection and Definition

Variables

Symbol

Definition

Control Variable

Basic Characteristics of Farmers

Age

X1

Actual survey value (years)

Education level

X2

0=Illiterate; 1=Primary school; 2=Junior high school; 3=Senior high school; 4=Technical secondary school; 5=Junior college; 6=Undergraduate;

7=Other

Total Population

X3

Actual Surveyed Number (persons)

Number of Migrant Workers

X4

Actual survey figures (persons)

Household economic characteristics

Dependence on cultivated land

X5

Ratio of annual income from cultivated land to total household annual income

Non-farm income

X6

Actual survey value (10,000 yuan)

Agricultural subsidy policies

X7

Includes the sum of direct grain subsidies, superior seed subsidies, agricultural input subsidies, rapeseed subsidies, poverty alleviation fund subsidies, breeding sow subsidies, agricultural machinery subsidies, dilapidated housing subsidies, poverty alleviation and ecological relocation subsidies, and training subsidies, unit (10,000 yuan)

Land Resource Endowment

Total Cultivated Land Area

X8

Actual Survey Value (hm)

Cultivated Land Planting Area

X9

Actual survey value (hm)

Number of plots

X10

Actual survey value (blocks)

Distance

X11

Actual survey value (km)

Basic family security

Household food supply method

X12

1=Fully self-produced, sufficient to eat; 2=Borrow or buy a little, basically enough to eat; 3=Seasonal national food relief; 4=Completely purchased

Housing Access

X13

1=No access; 2=Dirt road access; 3=Gravel road access; 4=Cement road access

Number of Participants in Pension Insurance

X14

Actual survey value (persons)

Number of participants in the new rural cooperative medical system

X15

Actual survey value (persons)

Explanatory variables

Supportive policies

Industrial Assistance

X16

1=Crop Cultivation; 2=Animal Husbandry; 3=Agricultural Processing; 4=Ethnic Handicrafts; 5=Service Industry

Education and Training Assistance

X17

1=Crop Cultivation Training; 2=Animal Husbandry Training; 3=Ethnic Handicrafts Training; 4=Service Industry Training; 5=Other Training

Rural Dilapidated Housing Renovation

X18

1=Renovation of old houses; 2=New construction on original homestead; 3=Application for new homestead to build a house

Ecological Migration

X19

0=No; 1=Yes

Infrastructure Construction

X20

1=Village-level road construction; 2=Group road construction; 3=Production road construction; 4=Ditch construction; 5=Courtyard hardening; 6=Village-level sewage discharge construction;

Explained Variable

Cultivated Land Protection

Quality Protection

Using Farmyard Manure

Y11

0=No; 1=Yes

Growing Green Manure

Y12

0=No; 1=Yes

Constructing irrigation channels

Y13

0=No; 1=Yes

Recycling agricultural film

Y14

0=No; 1=Yes

Straw returning to the field

Y15

0=No; 1=Yes

Land leveling

Y16

0=No; 1=Yes

Quantity Protection

Abandoning Cultivation and Leaving Land Uncultivated

Y21

0=No; 1=Yes

Land reclamation and cultivation

Y22

0=No; 1=Yes

Building houses or roads on contracted land

Y23

0=No; 1=Yes

Table 3 Multicollinearity Diagnostic Results

Variable

Maximum VIF

Mean VIF

Age

1.30

1.99

Education Level

1.26

1.93

Total Population

1.32

2.01

Number of Migrant Workers

1.27

1.91

Arable land dependence

1.31

1.99

Non-agricultural income

1.28

1.90

Agricultural subsidy policies

1.20

1.58

Total arable land area

1.40

2.11

Cultivated planting area

1.36

2.02

Number of plots

1.21

1.46

Distance

1.29

1.71

Household food ration method

1.32

1.89

Housing Access

1.26

1.62

Number of Participants in Pension Insurance

1.44

2.15

Number of Participants in New Rural Cooperative Medical Scheme

1.41

2.16

Industrial Support

1.22

1.48

Education and Training Assistance

1.20

1.40

Rural Dilapidated Housing Renovation

1.23

1.51

Ecological Migration

1.30

1.92

Infrastructure Construction

1.28

1.90

Table4 Estimation Results of Factors Influencing Farmers' Cultivated Land Quality Protection Behavior

Variables

Symbols

Use of farmyard manure

Growing green manure

Straw returning to fields

Recycling agricultural film

Land leveling

Building drainage ditches

Controlling variables

Basic household characteristics

Age

X1

0.816**

-0.634

-0.243

0.167

0.271

0.215

Education level

X2

1.027**

0.326

1.428***

1.034***

2.183**

0.651

Total population

X3

0.741**

0.618**

0.019

0.215

0.331

0.366**

Number of migrant workers

X4

-0.612*

1.028

0.371

-0.672

0.652

-1.019**

Household Economic Characteristics

Dependence on Cultivated Land

X5

0.322

0.771

0.168**

0.795

0.435

0.733

Non-agricultural Income

X6

0.497

0.587

-0.523

-0.539

-0.519

0.688

Agricultural subsidy policies

X7

1.503***

0.915**

0.857*

1.361**

0.172*

1.726**

Resource endowment

Total arable land area

X8

0.733

0.651

0.633

0.456

0.467

0.117

Cultivated land area

X9

0.629

0.225**

0.152*

-0.332

0.224

0.221

Number of plots

X10

0.281

0.218

0.718

0.215

-0.478**

0.155

Distance

X11

-1.417***

0.487

0.485

-0.547

0.044

0.367

Household Infrastructure and Security

Household Food Provision Method

X12

0.659

-0.356

0.110

0.473

0.317

0.688

Housing Access

X13

0.816***

0.519

0.311

0.398

0.449

0.061

Number of participants in pension insurance

X14

0.734

0.642

0.536

0.561

0.110

0.275

Number of participants in the new rural cooperative medical system

X15

0.852

0.107

0.494

0.604

0.211

0.344

Explanatory variables

Supportive Policies

Industrial Support

X16

-0.322*

0.003*

0.299*

0.736*

1.076**

1.256**

Education and Training Assistance

X17

0.584

0.377

0.725**

1.045**

0.523

0.053

Rural Dilapidated Housing Renovation

X18

0.131

0.408

0.511

0.337

0.162

0.322

Ecological Migration

X19

-1.193***

0.429*

0.084

-0.523

0.148

0.407

Infrastructure Construction

X20

0.458**

0.106

0.215

0.382

0.723

0.877

Constant

A

9.816

3.755

5.623

1.339

-3.415

-6.549

Observation Indicators

a

69.522

47.063

58.248

134.170

40.860

87.443

b

0.046

0.220

0.092

0.085

0.066

0.305

c

0.129

0.164

0.151

0.180

0.201

0.192

Note: ***, **, and * indicate significance at the 1%, 5%, and 10% levels respectively; a represents the -2LL value (-2 Log likelihood), b is the Cox & Snell R Square value, and c is the Nagelkerke R Square value.

Table 5 Estimation Results of Factors Influencing Farmers' Cultivated Land Quantity Protection Behavior

Variable

Symbol

Abandoning farmland and leaving it uncultivated

Reclaiming wasteland for cultivation

Building houses and roads on contracted land

Control variables

Basic household characteristics

Age

X1

-0.341

0.104

-0.145

Educational Attainment

X2

-0.268

-1. 632**

-0.211

Total Population

X3

0.174

0.527

0.691**

Number of migrant workers

X4

1.612**

-1.415**

0.437

Household economic characteristics

Arable Land Dependence

X5

-1.291***

0.671

-0.668**

Non-agricultural Income

X6

0.497

0.783

-0.523**

Agricultural subsidy policies

X7

0.583

0.022**

-0.352

Land resource endowment

Total cultivated land area

X8

0.633

0.351

0.436

Cultivated planting area

X9

-0.162

0.195

0.022

Number of plots

X10

0.181

0.218

0.018

Distance

X11

-1.017**

-0.887

-0.405*

Household infrastructure and security

Household food rationing method

X12

0.754

0.466

0.330

Housing access

X13

0.016

0.019

-0.711**

Number of participants in pension insurance

X14

0. 374

0.342

0.064

Number of participants in the new rural cooperative medical scheme

X15

0.255

0.437

0.049

Explanatory variables

Assistance Policies

Industrial Support

X16

-0.728**

0.174**

0.297*

Education and Training Assistance

X17

0.284

0.377

0.025

Rural Dilapidated Housing Renovation

X18

0.033

0.033

0.751

Ecological Migration

X19

2.106***

0. 167

0.084

Infrastructure Development

X20

-0.372**

0.155

1.013**

Constant

A

3.617

3.378

2.143

Observation Indicators

a

37.040

83.191

62.721

b

0.031

0.270

0.492

c

0.104

0.124

0.175

Note: ***, **, and * indicate statistical significance at the 1%, 5%, and 10% levels, respectively; a represents the -2LL value (-2 Log likelihood), b is the Cox & Snell R Square value, and c is the Nagelkerke R Square value.

Table 6 Estimation Results of Factors Influencing Farmland Quality Protection Behavior After Excluding Outliers

Explanatory Variables

Symbol

Using farmyard manure

Growing green manure

Straw returning to the field

Recycling agricultural film

Land leveling

Constructing drainage ditches

Supportive policies

Industrial Assistance

X16

-0.331*

0.101*

0.302*

0.437*

1.607**

1.573**

Education and Training Support

X17

1.009

0.526

1.375**

1.741**

1.057

0.861

Rural dilapidated housing renovation

X18

0.040

0.512

0.311

0.176

0.097

0.625

Ecological migration

X19

-3.677***

0.530*

0.104

-0.791

0.083

0.261

Infrastructure construction

X20

1.792**

0.007

0.005

1.035

2.127

3.042

Table 7 Estimation results of influencing factors on farmers' cultivated land quantity protection behavior after excluding extreme values

Explanatory variable

Symbol

Abandonment of cultivated land

Land reclamation and cultivation

Contracting land for building houses and roads

Support policies

Industrial assistance

X16

-3.671**

2.050**

0.185*

Education and Training Assistance

X17

3.207

0.871

0.422

Rural Dilapidated Housing Renovation

X18

0.033

0.033

0.751

Ecological Migration

X19

4.271***

0.010

0.260

Infrastructure Construction

X20

-2.011**

0.703

2.931**

Table 8 Estimation Results of Factors Influencing Farmers' Cultivated Land Quality Protection Behavior Using Variable Substitution

Explanatory Variables

Symbol

Use of Farmyard Manure

Growing green manure

Straw returning to fields

Recycling agricultural film

Land leveling

Constructing drainage ditches

Supportive policies

Industrial assistance

X16

-2.570*

0.021*

0.311*

2.466*

3.170**

2.841**

Education and Training Assistance

X17

1.082

0.143

1.518**

0.994**

0.361

0.622

Rural Dilapidated Housing Renovation

X18

0.099

0.592

0.071

0.221

0.192

0.270

Ecological Migration

X19

-4.287***

0.007*

0.180

-0.633

0.254

0.703

Infrastructure Construction

X20

3.161**

0.084

0.155

0.712

1.621

2.654

Table 9 Estimation Results of Factors Influencing Farmers' Cultivated Land Quantity Protection Behavior Using Variable Substitution

Explanatory Variables

Symbol

Abandoned farmland

Reclaiming wasteland for cultivation

Constructing buildings and roads on contracted land

Support policies

Industrial Support

X16

-2.611**

0.287**

0.305*

Education and Training Assistance

X17

0.192

0.284

0.141

Rural Dilapidated Housing Renovation

X18

0.149

0.177

0.560

Ecological Migration

X19

2.913***

0.044

0.166

Infrastructure Construction

X20

-1.952**

0.369

1.218**