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Environmental foe or friend: The influence of the shadow economy on forest land

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  • Nguyen, Canh Phuc
  • Nguyen, Binh Quang

Abstract

Previous studies indicate that the shadow economy is truly an environmental foe, with positive linkages with energy intensity, air pollution, and emissions. This study extends the literature by considering the environmental influence of the shadow economy on one of the most important components of the ecosystem, the forest. The analysis is carried out for a global sample of 148 countries from 1991 to 2017 using various panel techniques. Analyses are also conducted for four subsamples by income level and seven subsamples by region. The results are robust and consistent. Increases in the shadow economy seem, surprisingly, to have a positive impact on forest land in the short run. The effects are documented as consistent across four income groups and six out of seven sub-regions. However, the shadow economy appears to exacerbate deforestation in the long run. The results reveal asymmetric linkages between the shadow economy and forest area. More attention is then given to the consequences of the shadow economy on forest reservation, especially for long-term policy setting.

Suggested Citation

  • Nguyen, Canh Phuc & Nguyen, Binh Quang, 2023. "Environmental foe or friend: The influence of the shadow economy on forest land," Land Use Policy, Elsevier, vol. 124(C).
    • Handle: RePEc:eee:lauspo:v:124:y:2023:i:c:s0264837722004835
    DOI: 10.1016/j.landusepol.2022.106456
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    1. Li, Lingchao & Liu, Jinlong & Long, Hexing & de Jong, Wil & Youn, Yeo-Chang, 2017. "Economic globalization, trade and forest transition-the case of nine Asian countries," Forest Policy and Economics, Elsevier, vol. 76(C), pages 7-13.
    2. Adriana Anamaria Davidescu (Alexandru), 2014. "Investigating the Impact of Unemployment Rate on the Romanian Shadow Economy. A Complex Approach Based on ARDL and SVAR Analysis," Journal for Economic Forecasting, Institute for Economic Forecasting, vol. 0(4), pages 109-127, December.
    3. González-Eguino, Mikel, 2015. "Energy poverty: An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 47(C), pages 377-385.
    4. Robert C. Feenstra & Robert Inklaar & Marcel P. Timmer, 2015. "The Next Generation of the Penn World Table," American Economic Review, American Economic Association, vol. 105(10), pages 3150-3182, October.
    5. A. P. Kireenko & E. N. Nevzorova, 2019. "Shadow Economy in the Countryside of Russian Regions," Regional Research of Russia, Springer, vol. 9(1), pages 66-77, January.
    6. Ceyhun Elgin & M. ayhan Köse & Franziska Ohnsorge & Shu Yu, 2021. "Understanding Informality Abstract:," Working Papers 2021/03, Bogazici University, Department of Economics.
    7. Elgin, Ceyhun & Oztunali, Oguz, 2014. "Pollution and informal economy," Economic Systems, Elsevier, vol. 38(3), pages 333-349.
    8. Grossman, G.M & Krueger, A.B., 1991. "Environmental Impacts of a North American Free Trade Agreement," Papers 158, Princeton, Woodrow Wilson School - Public and International Affairs.
    9. Kose, M. Ayhan & Elgin, Ceyhun & Ohnsorge, Franziska & Yu, Shu, 2021. "Understanding Informality," CEPR Discussion Papers 16497, C.E.P.R. Discussion Papers.
    10. Munasinghe, Mohan, 1999. "Is environmental degradation an inevitable consequence of economic growth: tunneling through the environmental Kuznets curve," Ecological Economics, Elsevier, vol. 29(1), pages 89-109, April.
    11. Damette, Olivier & Delacote, Philippe, 2012. "On the economic factors of deforestation: What can we learn from quantile analysis?," Economic Modelling, Elsevier, vol. 29(6), pages 2427-2434.
    12. Leandro Medina & Mr. Friedrich Schneider, 2018. "Shadow Economies Around the World: What Did We Learn Over the Last 20 Years?," IMF Working Papers 2018/017, International Monetary Fund.
    13. Leandro Medina & Friedrich Schneider, 2019. "Shedding Light on the Shadow Economy: A Global Database and the Interaction with the Official One," CESifo Working Paper Series 7981, CESifo.
    14. M. Hashem Pesaran, 2021. "General diagnostic tests for cross-sectional dependence in panels," Empirical Economics, Springer, vol. 60(1), pages 13-50, January.
    15. Gene M. Grossman & Alan B. Krueger, 1995. "Economic Growth and the Environment," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 110(2), pages 353-377.
    16. Beck, Nathaniel & Katz, Jonathan N., 1995. "What To Do (and Not to Do) with Time-Series Cross-Section Data," American Political Science Review, Cambridge University Press, vol. 89(3), pages 634-647, September.
    17. Tanzi, Vito, 1999. "Uses and Abuses of Estimates of the Underground Economy," Economic Journal, Royal Economic Society, vol. 109(456), pages 338-347, June.
    18. Axel Dreher & Friedrich Schneider, 2010. "Corruption and the shadow economy: an empirical analysis," Public Choice, Springer, vol. 144(1), pages 215-238, July.
    19. Soham Baksi & Pinaki Bose, 2010. "Environmental Regulation in the Presence of an Informal Sector," Departmental Working Papers 2010-03, The University of Winnipeg, Department of Economics.
    20. David Roodman, 2009. "A Note on the Theme of Too Many Instruments," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 71(1), pages 135-158, February.
    21. Salahodjaev, Raufhon, 2016. "Intelligence and deforestation: International data," Forest Policy and Economics, Elsevier, vol. 63(C), pages 20-27.
    22. Culas, Richard J., 2007. "Deforestation and the environmental Kuznets curve: An institutional perspective," Ecological Economics, Elsevier, vol. 61(2-3), pages 429-437, March.
    23. Maureen Cropper & Charles Griffiths & Muthukumara Mani, 1999. "Roads, Population Pressures, and Deforestation in Thailand, 1976-1989," Land Economics, University of Wisconsin Press, vol. 75(1), pages 58-73.
    24. Buehn, Andreas & Schneider, Friedrich, 2009. "Corruption and the Shadow Economy: A Structural Equation Model Approach," IZA Discussion Papers 4182, Institute of Labor Economics (IZA).
    25. David Roodman, 2009. "How to do xtabond2: An introduction to difference and system GMM in Stata," Stata Journal, StataCorp LP, vol. 9(1), pages 86-136, March.
    26. Afawubo, Komivi & Noglo, Yawo Agbényégan, 2019. "Remittances and deforestation in developing countries: Is institutional quality paramount?," Research in Economics, Elsevier, vol. 73(4), pages 304-320.
    27. Baksi, Soham & Bose, Pinaki, 2016. "Informal sector, regulatory compliance, and leakage," Journal of Development Economics, Elsevier, vol. 121(C), pages 166-176.
    28. Guilhem Bascle, 2008. "Controlling for endogeneity with instrumental variables in strategic management research," Post-Print hal-00576795, HAL.
    29. John R. Hanson, 2003. "Proxies in the New Political Economy: Caveat Emptor," Economic Inquiry, Western Economic Association International, vol. 41(4), pages 639-646, October.
    30. Choumert, Johanna & Combes Motel, Pascale & Dakpo, Hervé K., 2013. "Is the Environmental Kuznets Curve for deforestation a threatened theory? A meta-analysis of the literature," Ecological Economics, Elsevier, vol. 90(C), pages 19-28.
    31. Jing Lan & Makoto Kakinaka & Xianguo Huang, 2012. "Foreign Direct Investment, Human Capital and Environmental Pollution in China," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 51(2), pages 255-275, February.
    32. Dominik H. Enste & Friedrich Schneider, 2000. "Shadow Economies: Size, Causes, and Consequences," Journal of Economic Literature, American Economic Association, vol. 38(1), pages 77-114, March.
    33. Edward B. Barbier, 2004. "Explaining Agricultural Land Expansion and Deforestation in Developing Countries," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 86(5), pages 1347-1353.
    34. Cropper, Maureen & Griffiths, Charles, 1994. "The Interaction of Population Growth and Environmental Quality," American Economic Review, American Economic Association, vol. 84(2), pages 250-254, May.
    35. repec:dau:papers:123456789/11250 is not listed on IDEAS
    36. Johanna Choumert & Pascale Combes Motel & K. Hervé Dakpo, 2013. "Is the Environmental Kuznets Curve for deforestation a threatened theory? A meta-analysis of the literature," Post-Print halshs-00806629, HAL.
    37. Arellano, Manuel & Bover, Olympia, 1995. "Another look at the instrumental variable estimation of error-components models," Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
    38. Biswas, Amit K. & Farzanegan, Mohammad Reza & Thum, Marcel, 2012. "Pollution, shadow economy and corruption: Theory and evidence," Ecological Economics, Elsevier, vol. 75(C), pages 114-125.
    39. Ceyhun Elgin & Oguz Oztunali, 2012. "Shadow Economies around the World: Model Based Estimates," Working Papers 2012/05, Bogazici University, Department of Economics.
    40. Colombo, Emilio & Onnis, Luisanna & Tirelli, Patrizio, 2016. "Shadow economies at times of banking crises: Empirics and theory," Journal of Banking & Finance, Elsevier, vol. 62(C), pages 180-190.
    41. Anderson, T. W. & Hsiao, Cheng, 1982. "Formulation and estimation of dynamic models using panel data," Journal of Econometrics, Elsevier, vol. 18(1), pages 47-82, January.
    42. Cesar A. Hidalgo & Ricardo Hausmann, 2009. "The Building Blocks of Economic Complexity," Papers 0909.3890, arXiv.org.
    43. Peter C. B. Phillips & Bruce E. Hansen, 1990. "Statistical Inference in Instrumental Variables Regression with I(1) Processes," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 57(1), pages 99-125.
    44. Friedrich Schneider & Dominik Enste, 1999. "Shadow Economies Around the World - Size, Causes, and Consequences," CESifo Working Paper Series 196, CESifo.
    45. Elgin, Ceyhun & Oyvat, Cem, 2013. "Lurking in the cities: Urbanization and the informal economy," Structural Change and Economic Dynamics, Elsevier, vol. 27(C), pages 36-47.
    46. Lipscomb, Molly & Prabakaran, Niveditha, 2020. "Property rights and deforestation: Evidence from the Terra Legal land reform in the Brazilian Amazon," World Development, Elsevier, vol. 129(C).
    47. Caravaggio, Nicola, 2020. "Economic growth and the forest development path: A theoretical re-assessment of the environmental Kuznets curve for deforestation," Forest Policy and Economics, Elsevier, vol. 118(C).
    48. Canh, Nguyen Phuc & Schinckus, Christophe & Thanh, Su Dinh & Chong, Felicia Hui Ling, 2021. "The determinants of the energy consumption: A shadow economy-based perspective," Energy, Elsevier, vol. 225(C).
    49. Blundell, Richard & Bond, Stephen, 1998. "Initial conditions and moment restrictions in dynamic panel data models," Journal of Econometrics, Elsevier, vol. 87(1), pages 115-143, August.
    50. Combes, Jean-Louis & Delacote, Philippe & Combes Motel, Pascale & Yogo, Thierry Urbain, 2018. "Public spending, credit and natural capital: Does access to capital foster deforestation?," Economic Modelling, Elsevier, vol. 73(C), pages 306-316.
    51. Friedrich Schneider & Konrad Raczkowski & Bogdan Mróz, 2015. "Shadow economy and tax evasion in the EU," Journal of Money Laundering Control, Emerald Group Publishing Limited, vol. 18(1), pages 34-51, January.
    52. Agee, Mark D. & Crocker, Thomas D., 2000. "Household environmental protection and the intergenerational transmission of human capital," Journal of Economic Psychology, Elsevier, vol. 21(6), pages 673-690, December.
    53. Galinato, Gregmar I. & Galinato, Suzette P., 2016. "The effects of government spending on deforestation due to agricultural land expansion and CO2 related emissions," Ecological Economics, Elsevier, vol. 122(C), pages 43-53.
    54. Torvik, Ragnar, 2002. "Natural resources, rent seeking and welfare," Journal of Development Economics, Elsevier, vol. 67(2), pages 455-470, April.
    55. Katsiaryna Svirydzenka, 2016. "Introducing a New Broad-based Index of Financial Development," IMF Working Papers 2016/005, International Monetary Fund.
    56. Rudel, Tom & Roper, Jill, 1997. "The paths to rain forest destruction: Crossnational patterns of tropical deforestation, 1975-1990," World Development, Elsevier, vol. 25(1), pages 53-65, January.
    57. Wang, Chunhua & Wu, JunJie & Zhang, Bing, 2018. "Environmental regulation, emissions and productivity: Evidence from Chinese COD-emitting manufacturers," Journal of Environmental Economics and Management, Elsevier, vol. 92(C), pages 54-73.
    58. Canh, Nguyen Phuc & Schinckus, Christophe & Thanh, Su Dinh, 2020. "The natural resources rents: Is economic complexity a solution for resource curse?," Resources Policy, Elsevier, vol. 69(C).
    59. Angelsen, Arild & Kaimowitz, David, 1999. "Rethinking the Causes of Deforestation: Lessons from Economic Models," The World Bank Research Observer, World Bank, vol. 14(1), pages 73-98, February.
    60. Nguyen, Canh Phuc & Su, Thanh Dinh, 2021. "Alleviating energy poverty for forest conservation: It seems to work, but what are we missing?," Land Use Policy, Elsevier, vol. 109(C).
    61. Nguyen Phuc Canh & Su Dinh Thanh & Christophe Schinckus & Jo Bensemann & Lai Trung Thanh, 2019. "Global Emissions: A New Contribution from the Shadow Economy," International Journal of Energy Economics and Policy, Econjournals, vol. 9(3), pages 320-337.
    62. Donald, Stephen G. & Imbens, Guido W. & Newey, Whitney K., 2009. "Choosing instrumental variables in conditional moment restriction models," Journal of Econometrics, Elsevier, vol. 152(1), pages 28-36, September.
    63. Bach Nguyen & Christophe Schinckus & Nguyen Phuc Canh & Su Dinh Thanh, 2021. "Economic Policy Uncertainty and Entrepreneurship: A Bad for a Good?," Journal of Entrepreneurship and Innovation in Emerging Economies, Entrepreneurship Development Institute of India, vol. 30(1), pages 81-133, March.
    64. Jay Pil Choi & Marcel Thum, 2005. "Corruption And The Shadow Economy," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 46(3), pages 817-836, August.
    65. Jean-Marie Chevalier & Nadia S. Ouédraogo, 2009. "Energy Poverty and Economic Development," Palgrave Macmillan Books, in: Jean-Marie Chevalier (ed.), The New Energy Crisis, chapter 4, pages 115-144, Palgrave Macmillan.
    66. Zeb, Alam & Hamann, Andreas & Armstrong, Glen W. & Acuna-Castellanos, Dante, 2019. "Identifying local actors of deforestation and forest degradation in the Kalasha valleys of Pakistan," Forest Policy and Economics, Elsevier, vol. 104(C), pages 56-64.
    67. Jac C. Heckelman, 2005. "Proxies for Economic Freedom: A Critique of the Hanson Critique," Southern Economic Journal, John Wiley & Sons, vol. 72(2), pages 492-501, October.
    68. Oleksii Lyulyov & Maksym Paliienko & Lesia Prasol & Tetyana Vasylieva & Oleksandra Kubatko & Victoria Kubatko, 2021. "Determinants of shadow economy in transition countries: economic and environmental aspects," International Journal of Global Energy Issues, Inderscience Enterprises Ltd, vol. 43(2/3), pages 166-182.
    69. Manuel Arellano & Stephen Bond, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(2), pages 277-297.
    70. Alemagi, Dieudonne & Kozak, Robert A., 2010. "Illegal logging in Cameroon: Causes and the path forward," Forest Policy and Economics, Elsevier, vol. 12(8), pages 554-561, October.
    71. Yilmaz Rasim & Koyuncu Cuneyt, 2019. "The Impact of ICT Penetration on Deforestation: A Panel Data Evidence," Review of Economic Perspectives, Sciendo, vol. 19(4), pages 345-364, December.
    72. Ihrig, Jane & Moe, Karine S., 2004. "Lurking in the shadows: the informal sector and government policy," Journal of Development Economics, Elsevier, vol. 73(2), pages 541-557, April.
    73. Leblois, Antoine & Damette, Olivier & Wolfersberger, Julien, 2017. "What has Driven Deforestation in Developing Countries Since the 2000s? Evidence from New Remote-Sensing Data," World Development, Elsevier, vol. 92(C), pages 82-102.
    74. Caravaggio, Nicola, 2020. "A global empirical re-assessment of the Environmental Kuznets curve for deforestation," Forest Policy and Economics, Elsevier, vol. 119(C).
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    More about this item

    Keywords

    Informal economy; Environment; Ecosystem; Forest; Sustainable development; JEL code; O17; Q23; Q51; Q56; Q57;
    All these keywords.

    JEL classification:

    • O17 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Formal and Informal Sectors; Shadow Economy; Institutional Arrangements
    • Q23 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Forestry
    • Q51 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Valuation of Environmental Effects
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth
    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics

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