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Protected Area Erasure Accelerates Deforestation in the Brazilian Amazon

Author

Listed:
  • Moretz-Sohn, Caio
  • Costa, Francisco J M

    (FGV EPGE Brazilian School of Economics and Finance)

Abstract

This paper estimates the impacts of protected area downsizing and degazettement (PADD) on land-use dynamics in the Brazilian Amazon. Analyzing PADD events implemented between 2009 and 2015, we compare estimates from standard difference-in-differences methods to synthetic difference-in-differences, which addresses violations of parallel trends arising from selective treatment assignment. We show that conventional difference-in-differences estimates yield null effects, consistent with prior literature. Synthetic difference-in-differences estimates, however, show that PADD increases deforestation by approximately 23% relative to pre-treatment baselines, driven by a 40% increase in pastureland expansion and a 3,471% increase in mining area growth. The divergence in results suggests that earlier null findings reflect methodological limitations rather than the absence of actual effects. Our findings underscore the importance of legal protection for environmental outcomes, especially in politically or economically contested areas.

Suggested Citation

  • Moretz-Sohn, Caio & Costa, Francisco J M, 2026. "Protected Area Erasure Accelerates Deforestation in the Brazilian Amazon," SocArXiv wgkty_v1, Center for Open Science.
    • Handle: RePEc:osf:socarx:wgkty_v1
    DOI: 10.31219/osf.io/wgkty_v1
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    References listed on IDEAS

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    1. Derya Keles & Alexander Pfaff & Michael B. Mascia, 2023. "Does the Selective Erasure of Protected Areas Raise Deforestation in the Brazilian Amazon?," Journal of the Association of Environmental and Resource Economists, University of Chicago Press, vol. 10(4), pages 1121-1147.
    2. Costa, Francisco & Szerman, Dimitri & Assunção, Juliano, 2025. "The environmental costs of political interference: Evidence from power plants in the Amazon," Journal of Public Economics, Elsevier, vol. 242(C).
    3. Keles, Derya & Delacote, Philippe & Pfaff, Alexander & Qin, Siyu & Mascia, Michael B., 2020. "What Drives the Erasure of Protected Areas? Evidence from across the Brazilian Amazon," Ecological Economics, Elsevier, vol. 176(C).
    4. Thiago Fonseca Morello Ramalho da Silva & Paula Carvalho Pereda & Ana Carolina M. Pessoa & Liana O. Anderson, 2024. "Staggered protection: a study of the dynamic effects of protected areas," Working Papers, Department of Economics 2024_02, University of São Paulo (FEA-USP), revised 09 May 2024.
    5. Dmitry Arkhangelsky & Susan Athey & David A. Hirshberg & Guido W. Imbens & Stefan Wager, 2021. "Synthetic Difference-in-Differences," American Economic Review, American Economic Association, vol. 111(12), pages 4088-4118, December.
    6. Reynaert, Mathias & Souza-Rodrigues, Eduardo & van Benthem, Arthur A., 2024. "The environmental impacts of protected area policy," Regional Science and Urban Economics, Elsevier, vol. 107(C).
    7. Assunção, Juliano & Gandour, Clarissa & Rocha, Rudi, 2015. "Deforestation slowdown in the Brazilian Amazon: prices or policies?," Environment and Development Economics, Cambridge University Press, vol. 20(6), pages 697-722, December.
    8. Porreca, Zachary, 2022. "Synthetic difference-in-differences estimation with staggered treatment timing," Economics Letters, Elsevier, vol. 220(C).
    9. Sylvia Klosin, 2024. "Dynamic Biases of Static Panel Data Estimators," Papers 2410.16112, arXiv.org.
    10. Diego Ciccia, 2024. "A Short Note on Event-Study Synthetic Difference-in-Differences Estimators," Papers 2407.09565, arXiv.org, revised Nov 2024.
    11. Goodman-Bacon, Andrew, 2021. "Difference-in-differences with variation in treatment timing," Journal of Econometrics, Elsevier, vol. 225(2), pages 254-277.
    12. Assunção, Juliano & Rocha, Romero, 2019. "Getting greener by going black: the effect of blacklisting municipalities on Amazon deforestation," Environment and Development Economics, Cambridge University Press, vol. 24(2), pages 115-137, April.
    13. Juliano Assunção & Clarissa Gandour & Romero Rocha, 2023. "DETER-ing Deforestation in the Amazon: Environmental Monitoring and Law Enforcement," American Economic Journal: Applied Economics, American Economic Association, vol. 15(2), pages 125-156, April.
    14. Yuanwei Qin & Xiangming Xiao & Fang Liu & Fabio Sa e Silva & Yosio Shimabukuro & Egidio Arai & Philip Martin Fearnside, 2023. "Forest conservation in Indigenous territories and protected areas in the Brazilian Amazon," Nature Sustainability, Nature, vol. 6(3), pages 295-305, March.
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