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Does growth reduce poverty? The mediating role of carbon emissions and income inequality

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Abstract

As economies continue to grow in the face of global climate change, international policy is focusing on the combined pursuit of social and environmental development, or ‘sustainable development goals’. Whilst such goals are often framed from the perspective of high-income countries, low-income countries struggle to balance their carbon-intensive growth strategies with poverty alleviation, and carbon emission reduction. Combined with the prospect of economic growth driving income inequality higher, the potential for a vicious cycle to emerge in low-income countries in particular is considerable. Whilst the negative association between economic growth and poverty is well established, the effectiveness of growth-based programmes as a poverty reduction strategy in the context of climate change and inequality is less certain. We explore the prospects of balancing these development goals and their consequences using an international dataset, and generalized method of moments estimators. We find that although economic development reduces poverty, carbon emissions (from carbon-intensive growth) coupled with inequality, exacerbates poverty. Secondly, we find that in terms of poverty reduction, poor countries are negatively impacted by both carbon emissions and income inequality, while rich countries are primarily impacted by income inequality. Finally, we find the effect of emissions on poverty is stronger for countries at higher poverty levels, suggesting that international policies aimed at achieving equitable emissions reduction should consider the potential for disproportionate negative impacts on poorer countries.

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Availability of data and materials

Please see Appendix A. Data and variable definitions.

Abbreviations

3SLS:

Three-stage least square estimator;

AR2:

Arellano–bond test for serial correlation at order two

EKC:

Environmental kuznets curve

GDP:

Gross domestic product

GDPPC:

GDP per capita

GINI:

Income inequality index

GMM:

Generalized method of moments

IKC:

Inequality Kuznets curve

IPCC:

Intergovernmental panel on climate change

PCSE:

Panel-corrected standard error estimates

SDG:

Sustainable development goals

USGCRP:

U.S. global change research program

References

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Acknowledgements

The author is grateful to all editors of the journal for their useful and constructive comments to revise this article.

Funding

The research conducted in this publication was funded by the Irish Research Council under award number GOIPG/2021/441.

Author information

Authors and Affiliations

Authors

Contributions

Q-KD: Conceptualization, data curation, formal analysis, methodology, and writing—original draft; and EF: Writing (10% approximately), editing (redrafting of final manuscript), structure (organization of sections).

Corresponding author

Correspondence to Khanh Duong.

Ethics declarations

Conflict of interest

The authors declare that they have no competing interests.

Ethics approval and consent to participate

Not applicable because this paper does not report on or involve the use of any animal or human data or tissue.

Consent for publication

Not applicable because this paper does not contain data from any individual person.

Additional information

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Appendices

Appendices

1.1 Appendix A: Data and variable definitions

Variables

Definitions

Inequality

Gini index (World Bank estimate)

Emissions

Carbon emissions (metric tons per capita)

GDPPC

GDP per capita, PPP (constant 2017 international $)

Poverty190

Poverty headcount ratio at $1.90 a day (2011 PPP) (% of population)

Poverty320

Poverty headcount ratio at $3.20 a day (2011 PPP) (% of population)

Poverty550

Poverty headcount ratio at $5.50 a day (2011 PPP) (% of population)

Poverty190-320

Difference between Poverty320 and Poverty190

Poverty320-550

Difference between Poverty550 and Poverty320

Population

Population, total

Renew. cnsmp

Renewable energy consumption (% of total final energy consumption)

Urbanization

Urban population (% of total population)

  1. All variables are taken in natural logarithm form
  2. Source: World Development Indicators 2021

1.2 Appendix B: List of countries under this study

Code

Long name

Income group

AFG

Islamic State of Afghanistan

Low income

ALB

Republic of Albania

Low income

DZA

People's Democratic Republic of Algeria

Low income

ASM

American Samoa

Low income

AND

Principality of Andorra

High income

AGO

People's Republic of Angola

Low income

ATG

Antigua and Barbuda

High income

ARG

Argentine Republic

Low income

ARM

Republic of Armenia

Low income

ABW

Aruba

High income

AUS

Commonwealth of Australia

High income

AUT

Republic of Austria

High income

AZE

Republic of Azerbaijan

Low income

BHS

Commonwealth of The Bahamas

High income

BHR

Kingdom of Bahrain

High income

BGD

People's Republic of Bangladesh

Low income

BRB

Barbados

High income

BLR

Republic of Belarus

Low income

BEL

Kingdom of Belgium

High income

BLZ

Belize

Low income

BEN

Republic of Benin

Low income

BMU

The Bermudas

High income

BTN

Kingdom of Bhutan

Low income

BOL

Plurinational State of Bolivia

Low income

BIH

Bosnia and Herzegovina

Low income

BWA

Republic of Botswana

Low income

BRA

Federative Republic of Brazil

Low income

VGB

British Virgin Islands

High income

BRN

Brunei Darussalam

High income

BGR

Republic of Bulgaria

Low income

BFA

Burkina Faso

Low income

BDI

Republic of Burundi

Low income

CPV

Republic of Cabo Verde

Low income

KHM

Kingdom of Cambodia

Low income

CMR

Republic of Cameroon

Low income

CAN

Canada

High income

CYM

Cayman Islands

High income

CAF

Central African Republic

Low income

TCD

Republic of Chad

Low income

CHI

Channel Islands

High income

CHL

Republic of Chile

High income

CHN

People's Republic of China

Low income

COL

Republic of Colombia

Low income

COM

Union of the Comoros

Low income

COD

Democratic Republic of the Congo

Low income

COG

Republic of Congo

Low income

CRI

Republic of Costa Rica

Low income

CIV

Republic of Côte d'Ivoire

Low income

HRV

Republic of Croatia

High income

CUB

Republic of Cuba

Low income

CUW

Curaçao

High income

CYP

Republic of Cyprus

High income

CZE

Czech Republic

High income

DNK

Kingdom of Denmark

High income

DJI

Republic of Djibouti

Low income

DMA

Commonwealth of Dominica

Low income

DOM

Dominican Republic

Low income

ECU

Republic of Ecuador

Low income

EGY

Arab Republic of Egypt

Low income

SLV

Republic of El Salvador

Low income

GNQ

Republic of Equatorial Guinea

Low income

ERI

State of Eritrea

Low income

EST

Republic of Estonia

High income

SWZ

Kingdom of Eswatini

Low income

ETH

Federal Democratic Republic of Ethiopia

Low income

FRO

Faroe Islands

High income

FJI

Republic of Fiji

Low income

FIN

Republic of Finland

High income

FRA

French Republic

High income

PYF

French Polynesia

High income

GAB

Gabonese Republic

Low income

GMB

Republic of The Gambia

Low income

GEO

Georgia

Low income

DEU

Federal Republic of Germany

High income

GHA

Republic of Ghana

Low income

GIB

Gibraltar

High income

GRC

Hellenic Republic

High income

GRL

Greenland

High income

GRD

Grenada

Low income

GUM

Guam

High income

GTM

Republic of Guatemala

Low income

GIN

Republic of Guinea

Low income

GNB

Republic of Guinea-Bissau

Low income

GUY

Co-operative Republic of Guyana

Low income

HTI

Republic of Haiti

Low income

HND

Republic of Honduras

Low income

HKG

Hong Kong (China)

High income

HUN

Hungary

High income

ISL

Republic of Iceland

High income

IND

Republic of India

Low income

IDN

Republic of Indonesia

Low income

IRN

Islamic Republic of Iran

Low income

IRQ

Republic of Iraq

Low income

IRL

Ireland

High income

IMN

Isle of Man

High income

ISR

State of Israel

High income

ITA

Italian Republic

High income

JAM

Jamaica

Low income

JPN

Japan

High income

JOR

Hashemite Kingdom of Jordan

Low income

KAZ

Republic of Kazakhstan

Low income

KEN

Republic of Kenya

Low income

KIR

Republic of Kiribati

Low income

PRK

Democratic People's Republic of Korea

Low income

KOR

Republic of Korea

High income

XKX

Republic of Kosovo

Low income

KWT

State of Kuwait

High income

KGZ

Kyrgyz Republic

Low income

LAO

Lao People's Democratic Republic

Low income

LVA

Republic of Latvia

High income

LBN

Lebanese Republic

Low income

LSO

Kingdom of Lesotho

Low income

LBR

Republic of Liberia

Low income

LBY

Socialist People's Libyan Arab Jamahiriya

Low income

LIE

Principality of Liechtenstein

High income

LTU

Republic of Lithuania

High income

LUX

Grand Duchy of Luxembourg

High income

MAC

Macao (China)

High income

MDG

Republic of Madagascar

Low income

MWI

Republic of Malawi

Low income

MYS

Malaysia

Low income

MDV

Republic of Maldives

Low income

MLI

Republic of Mali

Low income

MLT

Republic of Malta

High income

MHL

Republic of the Marshall Islands

Low income

MRT

Islamic Republic of Mauritania

Low income

MUS

Republic of Mauritius

Low income

MEX

United Mexican States

Low income

FSM

Federated States of Micronesia

Low income

MDA

Republic of Moldova

Low income

MCO

Principality of Monaco

High income

MNG

Mongolia

Low income

MNE

Montenegro

Low income

MAR

Kingdom of Morocco

Low income

MOZ

Republic of Mozambique

Low income

MMR

Republic of the Union of Myanmar

Low income

NAM

Republic of Namibia

Low income

NRU

Republic of Nauru

High income

NPL

Nepal

Low income

NLD

Kingdom of the Netherlands

High income

NCL

New Caledonia

High income

NZL

New Zealand

High income

NIC

Republic of Nicaragua

Low income

NER

Republic of Niger

Low income

NGA

Federal Republic of Nigeria

Low income

MKD

Republic of North Macedonia

Low income

MNP

Commonwealth of the Northern Mariana Islands

High income

NOR

Kingdom of Norway

High income

OMN

Sultanate of Oman

High income

PAK

Islamic Republic of Pakistan

Low income

PLW

Republic of Palau

High income

PAN

Republic of Panama

Low income

PNG

The Independent State of Papua New Guinea

Low income

PRY

Republic of Paraguay

Low income

PER

Republic of Peru

Low income

PHL

Republic of the Philippines

Low income

POL

Republic of Poland

High income

PRT

Portuguese Republic

High income

PRI

Puerto Rico

High income

QAT

State of Qatar

High income

ROU

Romania

Low income

RUS

Russian Federation

Low income

RWA

Republic of Rwanda

Low income

WSM

Samoa

Low income

SMR

Republic of San Marino

High income

STP

Democratic Republic of São Tomé and Principe

Low income

SAU

Kingdom of Saudi Arabia

High income

SEN

Republic of Senegal

Low income

SRB

Republic of Serbia

Low income

SYC

Republic of Seychelles

High income

SLE

Republic of Sierra Leone

Low income

SGP

Republic of Singapore

High income

SXM

Sint Maarten (Dutch part)

High income

SVK

Slovak Republic

High income

SVN

Republic of Slovenia

High income

SLB

Solomon Islands

Low income

SOM

Somali Democratic Republic

Low income

ZAF

Republic of South Africa

Low income

SSD

Republic of South Sudan

Low income

ESP

Kingdom of Spain

High income

LKA

Democratic Socialist Republic of Sri Lanka

Low income

KNA

St. Kitts and Nevis

High income

LCA

St. Lucia

Low income

MAF

St. Martin (French part)

High income

VCT

St. Vincent and the Grenadines

Low income

SDN

Republic of the Sudan

Low income

SUR

Republic of Suriname

Low income

SWE

Kingdom of Sweden

High income

CHE

Switzerland

High income

SYR

Syrian Arab Republic

Low income

TJK

Republic of Tajikistan

Low income

TZA

United Republic of Tanzania

Low income

THA

Kingdom of Thailand

Low income

TLS

Democratic Republic of Timor-Leste

Low income

TGO

Republic of Togo

Low income

TON

Kingdom of Tonga

Low income

TTO

Republic of Trinidad and Tobago

High income

TUN

Republic of Tunisia

Low income

TUR

Republic of Turkey

Low income

TKM

Turkmenistan

Low income

TCA

Turks and Caicos Islands

High income

TUV

Tuvalu

Low income

UGA

Republic of Uganda

Low income

UKR

Ukraine

Low income

ARE

United Arab Emirates

High income

GBR

United Kingdom of Great Britain and Northern Ireland

High income

USA

United States of America

High income

URY

Oriental Republic of Uruguay

High income

UZB

Republic of Uzbekistan

Low income

VUT

Republic of Vanuatu

Low income

VEN

República Bolivariana de Venezuela

Low income

VNM

Socialist Republic of Vietnam

Low income

VIR

Virgin Islands of the United States

High income

PSE

West Bank and Gaza

Low income

YEM

Republic of Yemen

Low income

ZMB

Republic of Zambia

Low income

ZWE

Republic of Zimbabwe

Low income

  1. Low income (in this study) = low income, lower middle income, and upper middle income (under the World Bank classification); and high income (in this study) = high income (according to the World Bank classification)

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Duong, K., Flaherty, E. Does growth reduce poverty? The mediating role of carbon emissions and income inequality. Econ Change Restruct 56, 3309–3334 (2023). https://doi.org/10.1007/s10644-022-09462-9

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