Abstract
How trade affects environmental emissions has generated heterogeneous results over the years. This is due to empirical ambiguities that are endemic in the literature. In order to evaluate and explain the discrepancy in the literature, this paper conducts a meta-analysis of 88 empirical studies published until 2018. Our results show that trade contributes to environmental emissions after controlling for publication bias and heterogeneity. In explaining the heterogeneous results across the primary studies, our findings largely suggest the estimated elasticities depend systematically on the estimation characteristics, the choice of pollutants and the publication characteristics of the primary studies. Accounting for heterogeneity, the result remains robust only for CO2 emissions compared to SO2. Overall, the trade elasticity of emissions effect remains robust when we decompose the analyses for different groups of countries, however, the emissions-content of trade is more pronounced for developed compared to developing countries.
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Notes
According to the World Bank, world trade as a percentage of GDP has more than doubled over five decades, rising from 24 percent in 1960 to about 50 percent in 2016. Similarly, trends in global greenhouse gas (GhG) emissions indicate that GhG emissions are about 55% higher than in 1990 and 40% higher than in 2000 (Olivier et al. 2017)
https://www.theatlantic.com/business/archive/2014/01/the-dark-side-of-globalization-why-seattles-1999-protesters-were-right/282831/, accessed on 1 January 2020
Although not reported, our results remains robust when we decompose the results according to these different variants
We extend Eqn. 4 to account for data dependence using a two-level model: \(t_{ij}= \beta _{1}+ \beta _0\frac{1}{SE_{ij}}+ \frac{\alpha _{kij} X_{kij}}{SE_{ij}} +\varsigma _j+ \epsilon _{ij}\), where the subscript i is the estimate from the j study while k refers to the group for each category of the moderator variable presented in Table 2. \(\varsigma _{j}\) refers to the study-level random effects (random intercepts). This modeling represents individual reported estimates, which are level 1, and are clustered and nested within studies, which are level 2. This representation follows closely the work of Doucouliagos and Stanley (2009).
The third category is the pool of both developing and developing countries in most case representing a global sample/cross country analysis.
This approach is labeled as the “best practice” in Stanley and Doucouliagos (2012).
References
Ades AF, Glaeser EL (1995) Trade and circuses: explaining urban giants. Q J Econ 110(1):195–227
Afesorgbor SK (2017) Revisiting the effect of regional integration on african trade: evidence from meta-analysis and gravity model. J Int Trade Econ Dev 26(2):133–153
Akin CS (2014) The impact of foreign trade, energy consumption and income on CO2 emissions. Int J Energy Econ Policy 4(3):465
Aklin M (2016) Re-exploring the trade and environment nexus through the diffusion of pollution. Environ Resource Econ 64(4):663–682
Al-Mulali U, Lean HH (2015) The influence of economic growth, urbanization, trade openness, financial development, and renewable energy on pollution in Europe. Nat Hazards 79(1):621–644
Al-Mulali U (2012) Factors affecting CO2 emission in the Middle East: a panel data analysis. Energy 44(1):564–569
Al-Mulali U, Saboori B, Ozturk I (2015) Investigating the environmental Kuznets curve hypothesis in Vietnam. Energy Policy 76:123–131
Al-Mulali U, Solarin SA, Ozturk I (2016) Investigating the presence of the environmental Kuznets curve (EKC) hypothesis in Kenya: an autoregressive distributed lag (ARDL) approach. Nat Hazards 80(3):1729–1747
Ali HS, Law SH, Zannah TI (2016) Dynamic impact of urbanization, economic growth, energy consumption, and trade openness on CO2 emissions in Nigeria. Environ Sci Pollut Res 23(12):12435–12443
Aller C, Ductor L, Herrerias MJ (2015) The world trade network and the environment. Energy Econ 52:55–68
Antweiler W, Copeland BR, Taylor MS (2001) Is free trade good for the environment? Am Econ Rev 91(4):877–908
Atici C (2009) Carbon emissions in Central and Eastern Europe: environmental Kuznets curve and implications for sustainable development. Sustain Dev 17(3):155–160
Atici C (2012) Carbon emissions, trade liberalization, and the Japan-ASEAN interaction: a group-wise examination. J Jpn Int Econ 26(1):167–178
Aung TS, Saboori B, Rasoulinezhad E (2017) Economic growth and environmental pollution in Myanmar: an analysis of environmental Kuznets curve. Environ Sci Pollut Res 24(25):20487–20501
Ayeche MB, Barhoumi M, Hammas MA (2016) Causal linkage between economic growth, financial development, trade openness and CO2 emissions in European Countries. Am J Environ Eng 6(4):110–122
Baghdadi L, Martinez-Zarzoso I, Zitouna H (2013) Are RTA agreements with environmental provisions reducing emissions? J Int Econ 90(2):378–390
Bel G, Gradus R (2016) Effects of unit-based pricing on household waste collection demand: a meta-regression analysis. Resource Energy Econ 44:169–182
Bernard J, Mandal S (2016) The impact of trade openness on environmental quality: an empirical analysis of emerging and developing economies. WIT Trans Ecol Environ 203:195–208
Boutabba MA (2014) The impact of financial development, income, energy and trade on carbon emissions: evidence from the Indian economy. Econ Model 40:33–41
Bouznit M, Pablo-Romero MDP (2016) CO2 emission and economic growth in Algeria. Energy Policy 96:93–104
Card NA (2015) Applied meta-analysis for social science research. New York: Guilford Press
Çetin M, Ecevit E (2017) The impact of financial development on carbon emissions under the structural breaks: empirical evidence from Turkish economy. Int J Econ Perspect 11(1):64–78
Charfeddine L, Khediri KB (2016) Financial development and environmental quality in UAE: cointegration with structural breaks. Renew Sustain Energy Rev 55:1322–1335
Choi E, Heshmati A, Cho Y (2010) An empirical study of the relationships between CO2 emissions, economic growth and openness. The Institute for the Study of Labor (IZA) Discussion Paper No. 50304
Cipollina M, Salvatici L (2010) Reciprocal trade agreements in gravity models: a meta-analysis. Rev Int Econ 18(1):63–80
Cole MA, Elliott RJ (2003) Determining the trade-environment composition effect: the role of capital, labor and environmental regulations. J Environ Econ Manag 46(3):363–383
Copeland BR, Taylor SM (2003) Trade and the environment. Princeton University Press, Princeton
de Sousa J, Hering L, Poncet S (2015) Has trade openness reduced pollution in China? Centre d’Etudes Prospectives et d’Informations Internationales (CEPII) Working Paper 2015-11
Demena BA, Afesorgbor SK (2020) The effect of FDI on environmental emissions: evidence from a meta-analysis. Energy Policy 138(11192):1–17
Demena BA, van Bergeijk PA (2017) A meta-analysis of FDI and productivity spillovers in developing countries. J Econ Surv 31(2):546–571
Dogan E, Seker F (2016) An investigation on the determinants of carbon emissions for OECD countries: empirical evidence from panel models robust to heterogeneity and cross-sectional dependence. Environ Sci Pollut Res 23(14):14646–14655
Dogan E, Seker F, Bulbul S (2017) Investigating the impacts of energy consumption, real GDP, tourism and trade on CO2 emissions by accounting for cross-sectional dependence: a panel study of OECD countries. Curr Issue Tour 20(16):1701–1719
Dogan E, Turkekul B (2016) CO2 emissions, real output, energy consumption, trade, urbanization and financial development: testing the EKC hypothesis for the USA. Environ Sci Pollut Res 23(2):1203–1213
Doucouliagos C, Stanley TD (2013) Are all economic facts greatly exaggerated? Theory competition and selectivity. J Econ Surv 27(2):316–339
Doucouliagos H, Stanley TD (2009) Publication selection bias in minimum-wage research? a meta-regression analysis. Br J Ind Relat 47(2):406–428
Eiras A, Schaefer B (2001) Trade: the best way to protect the environment. The Heritage Foundation Report
Farhani S, Chaibi A, Rault C (2014) CO2 emissions, output, energy consumption, and trade in Tunisia. Econ Model 38:426–434
Farhani S, Ozturk I (2015) Causal relationship between CO2 emissions, real GDP, energy consumption, financial development, trade openness, and urbanization in Tunisia. Environ Sci Pollut Res 22(20):15663–15676
Farzanegan MR, Markwardt G (2012) Pollution, economic development and democracy: evidence From the MENA countries. Technical report, Joint Discussion Paper Series in Economics
Floridi A, Demena BA, Wagner N (2020) Shedding light on the shadows of informality: a meta-analysis of formalization interventions targeted at informal firms. Labour Econ 67:101925
Fotros MH, Maaboudi R (2011) Trade openness and CO2 emissions in Iran, 1971-2008. Int J of Busi and Dev Stud 3(1):73–84
Frankel JA, Romer DH (1999) Does trade cause growth? Am Econ Rev 89(3):379–399
Frankel JA, Rose AK (2005) Is trade good or bad for the environment? Sorting out the causality. Rev Econ Stat 87(1):85–91
Gani A (2012) The relationship between good governance and carbon dioxide emissions: Evidence from developing economies. J Econ Dev 37(1):77
Goldfarb RS (1995) The economist-as-audience needs a methodology of plausible inference. J Econ Methodol 2(2):201–222
Grossman GM, Krueger AB (1993) Environmental impacts of a North American free trade agreement. National Bureau of Economic Research Working Paper 3914
Gu Z, Li J (2014) A Comparative analysis on carbon emission Eeffect of trade in Eastern, Middle and Western Regions in China. In: 3rd international conference on science and social research (ICSSR 2014)
Gujarati DN (2009) Basic econometrics. Tata McGraw-Hill, London
Hadi AS (1994) A modification of a method for the detection of outliers in multivariate samples. J R Stat Soc Ser B (Methodological) 39:393–396
Hakimi A, Hamdi H (2016) Trade liberalization, FDI inflows, environmental quality and economic growth: a comparative analysis between Tunisia and Morocco. Renew Sustain Energy Rev 58:1445–1456
Havranek T, Irsova Z (2011) Estimating vertical spillovers from FDI: Why results vary and what the true effect is? J Int Econ 85(2):234–244
He J, Richard P (2010) Environmental Kuznets curve for CO2 in Canada. Ecol Econ 69(5):1083–1093
Hossain MS (2011) Panel estimation for CO2 emissions, energy consumption, economic growth, trade openness and urbanization of newly industrialized countries. Energy Policy 39(11):6991–6999
Hossain NA, Hasanuzzaman S (2012) The Impact of energy consumption, urbanization, financial development, and trade openness on the environment in Bangladesh: an ARDL Bound Test Approach
Hossain S (2012) An econometric analysis for CO2 emissions, energy consumption, economic growth, foreign trade and urbanization of Japan. Low Carbon Econ 3(3):1069
Iršová Z, Havránek T (2013) Determinants of horizontal spillovers from FDI: evidence from a large meta-analysis. World Dev 42:1–15
Islam F, Shahbaz M (2012) Is there an environmental Kuznets curve for Bangladesh? Munich Personal RePEc Archive Working Paper 38490, University Library of Munich, Germany
Jalil A, Feridun M (2011) The impact of growth, energy and financial development on the environment in China: a cointegration analysis. Energy Econ 33(2):284–291
Jalil A, Mahmud SF (2009) Environment Kuznets curve for CO2 emissions: a cointegration analysis for China. Energy Policy 37(12):5167–5172
Jamel L, Maktouf S (2017) The nexus between economic growth, financial development, trade openness, and CO2 emissions in European countries. Cogent Econ Finance 5(1):1341456
Jayanthakumaran K, Verma R, Liu Y (2012) CO2 emissions, energy consumption, trade and income: a comparative analysis of China and India. Energy Policy 42:450–460
Jebli MB, Youssef SB (2015) The environmental Kuznets curve, economic growth, renewable and non-renewable energy, and trade in Tunisia. Renew Sustain Energy Rev 47:173–185
Jorgenson AK (2007) Does foreign investment harm the air we breathe and the water we drink? a cross-national study of carbon dioxide emissions and organic water pollution in less-developed countries, 1975 to 2000. Organ Environ 20(2):137–156
Jorgenson AK (2009) Foreign direct investment and the environment, the mitigating influence of institutional and civil society factors, and relationships between industrial pollution and human health: a panel study of less-developed countries. Organ Environ 22(2):135–157
Kang Y-Q, Zhao T, Yang Y-Y (2016) Environmental Kuznets curve for CO2 emissions in China: a spatial panel data approach. Ecol Ind 63:231–239
Kasman A, Duman YS (2015) CO2 emissions, economic growth, energy consumption, trade and urbanization in new EU member and candidate countries: a panel data analysis. Econ Model 44:97–103
Kearsley A, Riddel M (2010) A further inquiry into the Pollution Haven Hypothesis and the environmental Kuznets curve. Ecol Econ 69(4):905–919
Keho Y (2016) Trade openness and the environment: a time series study of ECOWAS countries. J Econ 4(4):61–69
Kim D-H, Suen Y-B, Lin S-C (2019) Carbon dioxide emissions and trade: evidence from disaggregate trade data. Energy Econ 78:13–28
Kirkpatrick C, Scrieciu SS (2008) Is trade liberalisation bad for the environment? a review of the economic evidence. J Environ Planning Manage 51(4):497–510
Kleemann L, Abdulai A (2013) The impact of trade and economic growth on the environment: revisiting the cross-country evidence. J Int Dev 25(2):180–205
Kohler M (2013) CO2 emissions, energy consumption, income and foreign trade: a South African perspective. Energy Policy 63:1042–1050
Krugman P, Elizondo RL (1996) Trade policy and the third world metropolis. J Dev Econ 49(1):137–150
Le T-H, Chang Y, Park D (2016) Trade openness and environmental quality: international evidence. Energy Policy 92:45–55
Li T, Wang Y, Zhao D (2016) Environmental Kuznets curve in China: new evidence from dynamic panel analysis. Energy Policy 91:138–147
Li Z, Xu N, Yuan J (2015) New evidence on trade-environment linkage via air visibility. Econ Lett 128:72–74
Lim S, Menaldo V, Prakash A (2015) Foreign aid, economic globalization, and pollution. Policy Sci 48(2):181–205
Lin F (2017) Trade openness and air pollution: City-level empirical evidence from China. China Econ Rev 45:78–88
Ma C, Rogers AA, Kragt ME, Zhang F, Polyakov M, Gibson F, Chalak M, Pandit R, Tapsuwan S (2015) Consumers? Willingness to pay for renewable energy: a meta-regression analysis. Resource Energy Econ 42:93–109
Managi S, Hibiki A, Tsurumi T (2009) Does trade openness improve environmental quality? J Environ Econ Manag 58(3):346–363
Martínez-Zarzoso I, Maruotti A (2011) The impact of urbanization on CO2 emissions: evidence from developing countries. Ecol Econ 70(7):1344–1353
McCarney GR, Adamowicz WL, et al. (2005) The effects of trade liberalization on the environment: An empirical study. In Annual Meeting, July 6-8, 2005, San Francisco, CA, number 34157. Canadian Agricultural Economics Society
Nasir M, Rehman FU (2011) Environmental Kuznets curve for carbon emissions in Pakistan: an empirical investigation. Energy Policy 39(3):1857–1864
Nolen E C. J, Cantú J d J. S, Guajardo R CR, García HG (2017) Free trade and pollution in the manufacturing industry in Mexico: A verification of the inverse Kuznets curve at a state level. Ensayos Revista de Economía (Ensayos Journal of Economics) 29(2)
Oczkowski E, Doucouliagos H (2015) Wine prices and quality ratings: a meta-regression analysis. Am J Agr Econ 97(1):103–121
Oganesyan M (2017) Carbon emissions, energy consumption and economic growth in the BRICS. Jönköping University, Jönköping International Business School Thesis
Ohlan R (2015) The impact of population density, energy consumption, economic growth and trade openness on CO2 emissions in India. Nat Hazards 79(2):1409–1428
Olivier JG, Schure K, Peters J (2017) Trends in global CO2 and total greenhouse gas emissions. PBL Netherlands Environmental Assessment Agency
Onoja AO, Ajie E, Achike A (2014) Econometric analysis of influences of trade openness, economic growth and urbanization on greenhouse gas emissions in Africa (1960–2010). J Econ Sustain Dev 5(10):85–93
Opoku E, Amoako S, Amankwa I (2014) Trade openness, economic growth and the environment: the case of Ghana. Int J Econ Commerce Manag 2(8):1–13
Ozatac N, Gokmenoglu KK, Taspinar N (2017) Testing the EKC hypothesis by considering trade openness, urbanization, and financial development:the case of Turkey. Environ Sci Pollut Res 24(20):16690–16701
Ozturk I, Acaravci A (2013) The long-run and causal analysis of energy, growth, openness and financial development on carbon emissions in Turkey. Energy Econ 36:262–267
Paarlberg R (2013) Food politics: what everyone needs to know®. Oxford University Press, New York
Pazienza P (2015) The relationship between CO2 and Foreign Direct Investment in the agriculture and fishing sector of OECD countries: evidence and policy considerations. Intell Econ 9(1):55–66
Peters GP, Minx JC, Weber CL, Edenhofer O (2011) Growth in emission transfers via international trade from 1990 to 2008. Proc Natl Acad Sci 108(21):8903–8908
Phimphanthavong H et al (2013) The impacts of economic growth on environmental conditions in Laos. Int J Bus Manag Econ Res 4(5):766–774
Poncet S, Hering L, de Sousa J (2015) Has trade openness reduced pollution in China? Foundation for studies and Research on International Development (FERDI) Development Policies Working Paper 132
Rafindadi AA (2016a) Does the need for economic growth influence energy consumption and CO2 emissions in Nigeria? Evidence from the innovation accounting test. Renew Sustain Energy Rev 62:1209–1225
Rafindadi AA (2016b) Revisiting the concept of environmental Kuznets curve in period of energy disaster and deteriorating income: empirical evidence from Japan. Energy Policy 94:274–284
Rose AK, Stanley TD (2005) A meta-analysis of the effect of common currencies on international trade. J Econ Surv 19(3):347–365
Saidi K, Mbarek MB (2017) The impact of income, trade, urbanization, and financial development on CO2 emissions in 19 emerging economies. Environ Sci Pollut Res 24(14):12748–12757
Salahuddin M, Alam K, Ozturk I (2016) The effects of Internet usage and economic growth on CO2 emissions in OECD countries: a panel investigation. Renew Sustain Energy Rev 62:1226–1235
Sbia R, Shahbaz M, Hamdi H (2014) A contribution of foreign direct investment, clean energy, trade openness, carbon emissions and economic growth to energy demand in UAE. Econ Model 36:191–197
Sehrawat M, Giri A, Mohapatra G (2015) The impact of financial development, economic growth and energy consumption on environmental degradation: evidence from India. Manag Environ Qual Int J 26(5):666–682
Shahbaz MH, Leitão NC (2013) Economic growth, energy consumption, financial development, international trade and CO2 emissions in Indonesia. Renew Sustain Energy Rev 25:109–121
Shahbaz M, Lean HH, Shabbir MS (2012) Environmental Kuznets curve hypothesis in Pakistan: cointegration and Granger causality. Renew Sustain Energy Rev 16(5):2947–2953
Shahbaz M, Nasreen S, Ahmed K, Hammoudeh S (2017a) Trade openness-carbon emissions nexus: the importance of turning points of trade openness for country panels. Energy Econ 61:221–232
Shahbaz M, Tiwari AK, Nasir M (2013) The effects of financial development, economic growth, coal consumption and trade openness on CO2 emissions in South Africa. Energy Policy 61:1452–1459
Shahbaz M, Uddin GS, Rehman IU, Imran K (2014) Industrialization, electricity consumption and CO2 emissions in Bangladesh. Renew Sustain Energy Rev 31:575–586
Shahzad SJH, Kumar RR, Zakaria M, Hurr M (2017b) Carbon emission, energy consumption, trade openness and financial development in Pakistan: a revisit. Renew Sustain Energy Rev 70:185–192
Solarin SA, Al-Mulali U, Musah I, Ozturk I (2017) Investigating the pollution haven hypothesis in Ghana: an empirical investigation. Energy 124:706–719
Stanley TD (2001) Wheat from chaff: Meta-analysis as quantitative literature review. J Econ Perspect 15(3):131–150
Stanley TD (2005) Beyond publication bias. J Econ Surv 19(3):309–345
Stanley TD, Doucouliagos H (2012) Meta-regression analysis in economics and business, vol 5. Routledge, London
Stanley TD, Doucouliagos H, Giles M, Heckemeyer JH, Johnston RJ, Laroche P, Nelson JP, Paldam M, Poot J, Pugh G et al (2013) Meta-analysis of economics research reporting guidelines. J Econ Surv 27(2):390–394
Sulaiman J, Azman A, Saboori B (2013) Evidence of the environmental Kuznets curve: implications of industrial trade data. Am J Environ Sci 9(2):130
Sun C, Zhang F, Xu M (2017) Investigation of pollution haven hypothesis for China: an ARDL approach with breakpoint unit root tests. J Clean Prod 161:153–164
Torras M, Boyce JK (1998) Income, inequality, and pollution: a reassessment of the environmental Kuznets curve. Ecol Econ 25(2):147–160
UlHaq I, Zhu S, Shafiq M (2016) Empirical investigation of environmental Kuznets curve for carbon emission in Morocco. Ecol Indic 67:491–496
van Bergeijk PA (1991) International trade and the environmental challenge. J World Trade 25:105
UNEP & WTO (2009) Trade and climate change. World Trade Organization and United Nations Environment Program
WTO (2019) World trade statistical review 2019
Yazdi SK, Mastorakis N (2014) Renewable, CO2 emissions, trade openness, and economic growth in Iran. Latest Trend Energy Environ Dev 25:360–370
You W-H, Zhu H-M, Yu K, Peng C (2015) Democracy, financial openness, and global carbon dioxide emissions: heterogeneity across existing emission levels. World Dev 66:189–207
Yuan Z, Guanghua W (2015) International trade and the urbanization of developing countries: evidence from Asia. Soc Sci China 36(2):186–204
Zerbo E (2015) CO2 emissions, growth, energy consumption and foreign trade in Sub-Sahara African countries. HAL Working Paper hal-01110769
Zhang B, Wang Z, Wang B et al (2018) Energy production, economic growth and CO2 emission: evidence from Pakistan. Nat Hazards 90(1):27–50
Zhu H, Duan L, Guo Y, Yu K (2016) The effects of FDI, economic growth and energy consumption on carbon emissions in ASEAN-5: evidence from panel quantile regression. Econ Model 58:237–248
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We thank Peter van Bergeijk, Liam Kelly and all participants in the Agricultural & Applied Economics Association (AAEA) Annual Meeting in Atlanta, Georgia (2019) for their useful comments. We are grateful to John Cranfield and the department of Food, Agricultural and Resource Economics, University of Guelph for the financial assistance and Mikayla Del Medico for her research assistantship. The usual disclaimer applies.
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Afesorgbor, S.K., Demena, B.A. Trade Openness and Environmental Emissions: Evidence from a Meta-Analysis. Environ Resource Econ 81, 287–321 (2022). https://doi.org/10.1007/s10640-021-00627-0
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DOI: https://doi.org/10.1007/s10640-021-00627-0