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County-level crop area in the USA 1840-2012
Principal Investigator(s): View help for Principal Investigator(s) Michael Crossley, University of Georgia
Version: View help for Version V2
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application/zip | 11.4 MB | 10/12/2020 07:21:AM |
Project Citation:
Crossley, Michael. County-level crop area in the USA 1840-2012. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2020-10-12. https://doi.org/10.3886/E115795V2
Project Description
Summary:
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This dataset contains estimates of proportional area of 18 major crops for each county in the United States at roughly decadal time steps between 1840 and 2017, and was used for analyses of historical changes in crop area, diversity, and distribution published in:
Crossley, MS, KD Burke, SD Schoville, VC Radeloff. (2020). Recent collapse of crop belts and declining diversity of US agriculture since 1840. Global Change Biology (in press).
The original data used to curate this dataset was derived by Haines et al. (ICPSR 35206) from USDA Agricultural Census archives (https://www.nass.usda.gov/AgCensus/).
This dataset builds upon previous work in that crop values are georeferenced and rectified to match 2012 county boundaries, and several inconsistencies in the tabular-formatted data have been smoothed-over. In particular, smoothing included conversion of values of production (e.g. bushels, lbs, typical of 1840-1880 censuses) into values of area (using USDA NASS yield data), imputation of missing values for certain crop x county x year combinations, and correcting values for counties whose crop totals exceeded the possible land area.
Please contact the PI, Mike Crossley, with any questions or requests: mcrossley3@gmail.com
Crossley, MS, KD Burke, SD Schoville, VC Radeloff. (2020). Recent collapse of crop belts and declining diversity of US agriculture since 1840. Global Change Biology (in press).
The original data used to curate this dataset was derived by Haines et al. (ICPSR 35206) from USDA Agricultural Census archives (https://www.nass.usda.gov/AgCensus/).
This dataset builds upon previous work in that crop values are georeferenced and rectified to match 2012 county boundaries, and several inconsistencies in the tabular-formatted data have been smoothed-over. In particular, smoothing included conversion of values of production (e.g. bushels, lbs, typical of 1840-1880 censuses) into values of area (using USDA NASS yield data), imputation of missing values for certain crop x county x year combinations, and correcting values for counties whose crop totals exceeded the possible land area.
Please contact the PI, Mike Crossley, with any questions or requests: mcrossley3@gmail.com
Funding Sources:
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USDA NIFA AFRI ELI Predoctoral Fellowship (2018-67011-28058);
NSF IGERT (1144752)
Scope of Project
Subject Terms:
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agriculture;
crops
Geographic Coverage:
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Conterminous United States
Time Period(s):
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1840 – 2017
Data Type(s):
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geographic information system (GIS) data
Methodology
Data Source:
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The original data used to curate this dataset was derived by Haines et al. (ICPSR 35206) from USDA Agricultural Census archives (https://www.nass.usda.gov/AgCensus/).
Geographic Unit:
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County
Related Publications
Published Versions
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This material is distributed exactly as it arrived from the data depositor. ICPSR has not checked or processed this material. Users should consult the investigator(s) if further information is desired.