Cao, Peiyu; Lu, Chaoqun; Yu, Zhen (2017): Agricultural nitrogen fertilizer uses in the continental U.S. during 1850-2015: a set of gridded time-series data. PANGAEA, https://doi.org/10.1594/PANGAEA.883585, Supplement to: Cao, P et al. (2018): Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types. Earth System Science Data, 10(2), 969-984, https://doi.org/10.5194/essd-10-969-2018
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To facilitate earth system modeling and inventory-based studies, we developed a spatially explicit time-series data set of nitrogen (N) fertilizer use in agricultural land of the continental U.S. during 1850 to 2015. The spatial resolution of this data set is 5km × 5km, and the time step is annually. Through gap-filling, we reconstructed the state-level crop-specific N fertilizer use history by harmonizing national and state-level N fertilizer use data from multiple data sources. We then spatialized and resampled N fertilizer use data to 5km × 5km gridded maps based on historical land cover data of the continental U.S. developed by Yu and Lu (2017). This data indicated that N fertilizer use rates of the U.S. increased by 34 times from 1940 to 2015. Geospatial analysis revealed that the hotspots of N fertilizer use have shifted from the southeastern and eastern US to the Midwest and the Great Plains during the past century.
Median Latitude: 37.000000 * Median Longitude: -103.500000 * South-bound Latitude: 25.000000 * West-bound Longitude: -126.000000 * North-bound Latitude: 49.000000 * East-bound Longitude: -81.000000
Date/Time Start: 1850-01-01T00:00:00 * Date/Time End: 2015-12-31T00:00:00
835 data points