Inequality Persistence in Papua and West Papua through Urban Rural Spatial Divergence
DOI:
https://doi.org/10.59976/jebin.v3i3.333Abstract
This study analyzes the persistence of consumption inequality in Papua and West Papua by emphasizing the role of spatial divergence between urban and rural areas. The study uses six waves of Indonesia’s National Socioeconomic Survey (SUSENAS) from March 2010, 2014, 2017, 2020, 2022, and 2025, with a consistent classification of ten spatial zones to ensure comparability before and after administrative expansion. The methods employed include Shapley decomposition to separate spatial and non-spatial inequality across the Gini index, Mean Log Deviation, Theil index, and GE(2), as well as Recentred Influence Function (RIF) regression and the Blinder-Oaxaca approach to identify regional contributions and household-level determinants. The findings show that consumption inequality increased from a Gini coefficient of 0.355 in 2010 to 0.412 in 2020, declined to 0.389 in 2022, and rose again to 0.393 in 2025. Since 2014, spatial inequality has become the main driver of rising inequality, particularly through the concentration of formal economic activity and mining rents in Jayapura and Timika, alongside the continued isolation of rural areas in the Papuan Highlands. Education and participation in non-subsistence employment are identified as key mediating factors that reinforce disparities across spatial zones. These findings indicate that reducing inequality in Papua and West Papua requires policies that go beyond fiscal transfers, including equal access to education, market integration, infrastructure development, and conflict resolution in highland areas.
References
Achten, S., & Lessmann, C. (2020). Spatial inequality, geography and economic activity. World Development, 136, 105114. https://doi.org/10.1016/j.worlddev.2020.105114
Aginta, H., Gunawan, A. B., & Mendez, C. (2021). Regional income disparities and convergence clubs in Indonesia: New district-level evidence 2000-2017. Journal of the Asia Pacific Economy. https://doi.org/10.1080/13547860.2020.1868107
Aginta, H., & Someya, M. (2022). Regional economic structure and heterogeneous effects of monetary policy: Evidence from Indonesian provinces. Journal of Economic Structures, 11(1), 1–25. https://doi.org/10.1186/s40008-021-00260-6
Ayyash, M., Sek, S. K., & Kole, A. (2025). Income inequality dynamics in ASEAN-5: A panel data approach using CS-ARDL to examine macroeconomic factors. Discover Sustainability, 6(1), 465. https://doi.org/10.1007/s43621-025-01068-1
Azzarri, C., & Signorelli, S. (2021). Regional inequalities and welfare disparities: Evidence from multidimensional poverty measures. World Development, 145, 105521. https://doi.org/10.1016/j.worlddev.2021.105521
Barat, B. P. S. P. P. (2025a). Poverty Rate in Papua Barat, March 2025. Badan Pusat Statistik Provinsi Papua Barat.
Barat, B. P. S. P. P. (2025b). Poverty Rate in Papua Barat Daya, March 2025. Badan Pusat Statistik Provinsi Papua Barat.
Bouvet, F. (2021). Regional integration and income inequality: A synthetic counterfactual analysis of the European Monetary Union. Oxford Review of Economic Policy, 37(1), 172–200. https://doi.org/10.1093/oxrep/graa059
Chantreuil, F., & Trannoy, A. (2013). Inequality Decomposition Values: The Trade-off between Marginality and Efficiency. Journal of Economic Inequality, 11(1), 83–98. https://doi.org/10.1007/s10888-011-9207-y
Cörvers, F., & Mayhew, K. (2021). Regional inequalities: Causes and cures. Oxford Review of Economic Policy, 37(1), 1–16. https://doi.org/10.1093/oxrep/graa067
Fauziyah, E., Awang, S. A., Suryanto, P., & Achmad, B. (2025). Inequality and Poverty of Privately Owned Forests Farmers in Rural Areas of Indonesia. Forest Science and Technology. https://doi.org/10.1080/21580103.2024.2409219
Fourrey, K. (2023). A Regression-Based Shapley Decomposition of Inequality by Income Sources. Annals of Economics and Statistics, (151), 63–96. https://doi.org/10.2307/48718079
Gradín, C. (2020). Quantifying the Contribution of a Subpopulation to Inequality: An Application to Mozambique. Journal of Economic Inequality, 18(3), 391–419. https://doi.org/10.1007/s10888-020-09451-w
Gradín, C. (2025). Spatial Consumption Inequality in Mozambique. Journal of African Economies, 35(1), ejaf009. https://doi.org/10.1093/jae/ejaf009
Gunawan, A. B., Mendez, C., & Otsubo, S. T. (2021). Provincial income convergence clubs in Indonesia: Identification and conditioning factors. Growth and Change, 52(4), 2540–2575. https://doi.org/10.1111/grow.12553
Hajad, V. (2025). Gendered exclusion and governance failures in rural Indonesia: The case of the Gayo coffee sector. Development Studies Research. https://doi.org/10.1080/21665095.2025.2584042
Halim, P. R., & Purnagunawan, R. M. (2025). Structural transformation and regional inequality differential in Indonesia. Regional Studies, Regional Science. https://doi.org/10.1080/21681376.2025.2565318
Hayashi, M., Kataoka, M., & Akita, T. (2014). Expenditure Inequality in Indonesia, 2008–2010: A Spatial Decomposition Analysis and the Role of Education. Asian Economic Journal, 28(4), 389–411. https://doi.org/10.1111/asej.12042
Khoiruddin, M. A., Suman, A., Prasetyia, F., Susilo, & Yuniashri, E. (2025). Informality and multidimensional child poverty: Evidence from urban and rural Indonesia. Development Studies Research, 12(1), 2533852. https://doi.org/10.1080/21665095.2025.2533852
Mendez, C., & Kataoka, M. (2021). Disparities in regional productivity, capital accumulation, and efficiency across Indonesia: A club convergence approach. Review of Development Economics, 25(2), 790–809. https://doi.org/10.1111/rode.12726
Miranti, R. (2021). Is regional poverty converging across Indonesian districts? A distribution dynamics and spatial econometric approach. Asia-Pacific Journal of Regional Science, 5, 851–883. https://doi.org/10.1007/s41685-021-00199-3
Monitor, H. R. (2025). Annual Report 2025: Human Rights and Conflict in West Papua. Human Rights Monitor.
Papua, B. P. S. P. (2025a). Economic Growth of Papua Pegunungan Province, Quarter IV-2024. Badan Pusat Statistik Provinsi Papua.
Papua, B. P. S. P. (2025b). Economic Growth of Papua Tengah Province, Quarter IV-2024. Badan Pusat Statistik Provinsi Papua.
Papua, B. P. S. P. (2025c). Poverty Profile of Papua Pegunungan Province, September 2024. Badan Pusat Statistik Provinsi Papua.
Papua, B. P. S. P. (2025d). Poverty Profile of Papua Province, September 2024. Badan Pusat Statistik Provinsi Papua.
Rumkabu, E., Pamungkas, C., & Aidulsyah, F. (2023a). Ekonomi, Pembangunan, dan Ketimpangan di Papua. LIPI Press.
Rumkabu, E., Pamungkas, C., & Aidulsyah, F. (2023b). Layanan Publik dan Akses Pendidikan di Papua. LIPI Press.
Salvucci, V., & Tarp, F. (2024). Assessing the Impact of Covid-19 in Mozambique in 2020. The European Journal of Development Research, 36, 803–840. https://doi.org/10.1057/s41287-023-00613-w
Shifa, M., & Leibbrandt, M. (2024). Spatial Inequality in Sub-Saharan Africa. African Geographical Review, 43(1), 1–17. https://doi.org/10.1080/19376812.2022.2099916
Siburian, M. E. (2020). Fiscal decentralization and regional income inequality: Evidence from Indonesia. Applied Economics Letters, 27(17), 1383–1386. https://doi.org/10.1080/13504851.2019.1683139
Sjaf, S. (2025). Analysis of spatial inequality and rural development in the Supporting Region for the Nusantara Capital City, Penajam Paser Utara Regency, East Kalimantan, Indonesia. Environmental and Sustainability Indicators. https://www.sciencedirect.com/science/article/pii/S2666558125000521
Sudaryanto, T., Erwidodo, Dermoredjo, S. K., Purba, H. J., Rachmawati, R. R., & Irawan, A. R. (2023). Regional rural transformation and its association with household income and poverty incidence in Indonesia in the last two decades. Journal of Integrative Agriculture, 22(12), 3596–3609. https://doi.org/10.1016/j.jia.2023.11.029
Sudira, I. N., Pamungkas, C., Aidulsyah, F., Rumkabu, E., & Langowuyo, Y. (2020). Pembangunan, Marginalisasi, dan Disintegrasi Papua. IMPARSIAL.
Suryahadi, A., Aji, P., & Wibisono, I. D. (2021). Income, Inequality and Poverty Convergence at the Local Government Level in Decentralized Indonesia. Journal of Southeast Asian Economies. https://doi.org/10.1355/ae38-3f
Szczepaniak, M., Geise, A., & Bariyah, N. (2022). Impact of institutional determinants on income inequalities in Indonesia during the Era Reformasi. Journal of Asian Economics, 82, 101526. https://doi.org/10.1016/j.asieco.2022.101526
Wahyuni, R. N. T., Ikhsan, M., Damayanti, A., & Khoirunurrofik, K. (2022). Inter-District Road Infrastructure and Spatial Inequality in Rural Indonesia. Economies, 10(9), 229. https://doi.org/10.3390/economies10090229
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