We reconstructed the cropland density maps by harmonizing multiple sources of inventory data and high-resolution satellite images. The time-series gridded data depicts the distribution and percentage of cultivated land each year (excluding summer idle/fallow, cropland pasture). The reconstructed annual cropland percentage maps were at 1 km×1 km resolution covering the conterminous U.S. spanning from 1850 to 2016.
Citation:
Yu, Z., and C. Lu. 2018. Historical cropland expansion and abandonment in the continental U.S. during 1850 to 2016. Global Ecology and Biogeography https://doi.org/10.1111/geb.12697.
Entity and Attribute Information
Entity type: cropland density maps
Entity type definition: distribution and percentage of cultivated land each year (excluding summer idle/fallow, cropland pasture) covering conterminous U.S.
Domain
Grid dimension: 4614 columns, 2895 rows
Grid spatial resolution: 1km × 1km
Top Left gridcell: 45.5 N, 96.0 W
Spatial reference information
Projection: Albers_Conical_Equal_Area
Datum: North America 1983
Spheroid: GRS_1980, 6378137.0, 298.257222101
Central Meridian: -96.0
Latitude of origin, 23.0
Units: Meters
Data format
Geo tiff Grid image
Time Period Information
Beginning Date: 1850
Ending Date: 2016
Time step: yearly