Climate Change, Crop Yields, and Internal Migration in the United States
We investigate the link between agricultural productivity and net migration in the United States using a county-level panel for the most recent period of 1970-2009. In rural counties of the Corn Belt, we find a statistically significant relationship between changes in net outmigration and climate-driven changes in crop yields, with an estimated semi-elasticity of about -0.17, i.e., a 1% decrease in yields leads to a 0.17% net reduction of the population through migration. This effect is primarily driven by young adults. We do not detect a response for senior citizens, nor for the general population in eastern counties outside the Corn Belt. Applying this semi-elasticity to predicted yield changes under the B2 scenario of the Hadley III model, we project that, holding other factors constant, climate change would on average induce 3.7% of the adult population (ages 15-59) to leave rural counties of the Corn Belt in the medium term (2020-2049) compared to the 1960-1989 baseline, with the possibility of a much larger migration response in the long term (2077-2099). Since there is uncertainty about future warming, we also present projections for a range of uniform climate change scenarios in temperature or precipitation.
|Date of creation:||Jan 2012|
|Date of revision:|
|Contact details of provider:|| Postal: |
Web page: http://www.nber.org
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Hornbeck, Richard A., 2012.
"The Enduring Impact of the American Dust Bowl: Short- and Long-Run Adjustments to Environmental Catastrophe,"
11303325, Harvard University Department of Economics.
- Richard Hornbeck, 2012. "The Enduring Impact of the American Dust Bowl: Short- and Long-Run Adjustments to Environmental Catastrophe," American Economic Review, American Economic Association, vol. 102(4), pages 1477-1507, June.
- Richard Hornbeck, 2009. "The Enduring Impact of the American Dust Bowl: Short and Long-run Adjustments to Environmental Catastrophe," NBER Working Papers 15605, National Bureau of Economic Research, Inc.
- Wolfram Schlenker & W. Michael Hanemann & Anthony C. Fisher, 2005. "Will U.S. Agriculture Really Benefit from Global Warming? Accounting for Irrigation in the Hedonic Approach," American Economic Review, American Economic Association, vol. 95(1), pages 395-406, March.
- Michael J. Roberts & Nigel Key, 2008. "Agricultural Payments and Land Concentration: A Semiparametric Spatial Regression Analysis," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 90(3), pages 627-643.
- Mendelsohn, Robert & Nordhaus, William D & Shaw, Daigee, 1994. "The Impact of Global Warming on Agriculture: A Ricardian Analysis," American Economic Review, American Economic Association, vol. 84(4), pages 753-71, September.
- Dimitri, Carolyn & Effland, Anne & Conklin, Neilson C., 2005. "The 20th Century Transformation of U.S. Agriculture and Farm Policy," Economic Information Bulletin 59390, United States Department of Agriculture, Economic Research Service.
- Key, Nigel D. & Roberts, Michael J., 2007. "Do Government Payments Influence Farm Size and Survival?," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 32(02), August.
- Marshall Burke & John Dykema & David Lobell & Edward Miguel & Shanker Satyanath, 2011. "Incorporating Climate Uncertainty into Estimates of Climate Change Impacts, with Applications to U.S. and African Agriculture," NBER Working Papers 17092, National Bureau of Economic Research, Inc.
- Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, vol. 92(1), pages 1-45, September.
When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:17734. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.