Articles | Volume 10, issue 2
04 Jun 2018
 | 04 Jun 2018

Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types

Peiyu Cao, Chaoqun Lu, and Zhen Yu


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Peiyu Cao on behalf of the Authors (31 May 2018)   Author's adjustment   Manuscript
EA: Adjustments approved (01 Jun 2018) by David Carlson
Short summary
A long-term N fertilizer use history is important for both field investigators and modeling community to examine the cumulative impacts of N fertilizer uses. We developed a spatially explicit time-series data set of nitrogen fertilizer use in agricultural land of the continental US during 1850–2015 at a resolution of 5 km × 5 km based on multiple data sources and historical cropland maps. It contains nitrogen fertilizer use rate, application timing, and ammonium and nitrate form fertilizer use.