The Philippines is experiencing the effects of wide swings in weather conditions in recent years. The country experienced super typhoons, floods, and extended periods of drought recurring in most of the regions. The agricultural commodity that is severely affected by climate change is rice, which is the staple food of Filipinos. Using a computable general equilibrium model calibrated to Philippine data, the paper analyzes the effects of climate change as it affects palay productivity. The analysis looks at the impact on palay production and rice supply, prices, consumption, household income, and welfare. The paper extends the analysis by computing the income distribution and poverty effects of the productivity changes by applying a poverty microsimulation using the 2012 Family Income and Expenditure Survey. The results indicate that climate change decreases palay production in rainfed (or non-irrigated) areas, leading to higher prices, reduced rice consumption, decreased real income of households, decreased welfare, increased income inequality, and poverty. These effects however are minimized or reversed if the limits imposed by the government on rice imports are relaxed. If the government reduces the trade barriers on imported rice which is considerably cheaper than domestically produced rice, supply of rice improves which decreases prices, rice consumption increases, real household improves, welfare increases, and income inequality and poverty decrease.
Keywords: climate change, irrigation, rice, povertyCockburn, J. (2001). Trade liberalization and poverty in Nepal: A computable general equilibrium micro simulation analysis, [mimeo]., Department of Economics, Laval University, Location.
Cororaton, C. B., A. Inocencio, MA., Tiongco, M., and A.& Manalang, A. (2016). Assessing the potential economic and poverty effects of the national greening program. DLSU Business & Economics Review, 26(1),: 1-–38.
Cororaton, C. B., & E. Corong, E. (2009). Philippine agricultural and food policies: Implications on poverty and income distribution. (International Food Policy Research Institute (IFPRI) Research Report No. 161). Washington DC: IFPRI.
Cororaton, C. B., &J. Cockburn, J. (2007). “Trade reform and poverty— - Lessons from the Philippines: A CGE-microsimulation analysis”. Journal of Policy Modeling, 29(1),: 141-–163.
Decaluwé, B., A. Patry, A.,L. Savard, L., & E. Thorbecke, E. (2000). "Poverty analysis within a general equilibrium framework", (Working Paper 9909)., Place of publication: Department of Economics, Laval University.
De Janvry, A., E. Sadoulet, E., & A. Fargeix, A. (1991)., "Politically feasible and equitable adjustment: Some alternatives for Ecuador.", World Development, 19(11),: 1577-–1594.
Foster, J.,ames; Joel Greer, J., & Erik Thorbecke, E. (1984). "A class of decomposable poverty measures". Econometrica,. 3( 52),: 761–766. doi:10.2307/1913475.
Ganuza, E., R. Barros, R., & R. Vos, R. (2002). Labor market adjustment, poverty and inequality during liberalization. In R. Vos, L. Taylor, & R. P. de Barros (Eds.), Economic liberalization, distribution and poverty: Latin America in the 1990s (pp. 54–88). (Rob Vos, Lance Taylor and Ricardo Paes de Barros, R., eds) Cheltenham (UK) and Northampton (US): Edward Elgar Publishing, pp. 54-88.
Hayami, Y., and M.& Kikuchi, M. (1978). “Investment inducements to public infrastructure: Irrigation in the Philippines.” Review of Economics and Statistics, 60, no. 1: 70–77.
Inocencio, A. (in press). Trends in agricultural water resources, Book Chapter iIn The future of Philippine agriculture: Scenarios, policies, and investments. Singapore: under Climate Change Institute of Southeast Asian Studies Publishing, Singapore.
International Rice Research Institute (2017)
Kikuchi, M., A. Maruyama, A., and Y.& Hayami, Y. (2003). “Phases of irrigation development in Asian tropics: A case study of the Philippines and Sri Lanka.” Journal of Development Studies, 39(, no.5),: 109–138.
NIA (National Irrigation Administration). (2016). Irrigation development. Quezon City: NIAAuthor.
PSA (Philippine Statistical Authority). (2016). Philippine statistical yearbook. Quezon City: PSAAuthor.
Philippine Statistics Authority PSA. (Various years). Family income and expenditure surveys (FIES) for 1997, 2000, 2003, 2009 2012 [Data file]. Quezon City: PSAAuthor.
Philippine Statistical Authority. (year). Family income and expenditure survey (FIES) for 2000 [Data file]. Quezon City: Author.
Philippine Statistical Authority. (year). Family income and expenditure survey (FIES) for 2003 [Data file]. Quezon City: Author.
Philippine Statistical Authority. (year). Family income and expenditure survey (FIES) for 2009 [Data file]. Quezon City: Author.
Philippine Statistical Authority. (year). Family income and expenditure survey (FIES) for 2012 [Data file]. Quezon City: Author.
Thomas, S. T, Pradesha, A., & Perez, N. (2015). " Agricultural growth and climate resilience in the Philippines: Subnational impacts of selected investment strategies and policies”. (Project Policy Note 2). Washington, D.C.: International Food Policy Research Institute., Washington DC