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Abstract Nitrogen (N) deposition is a significant nutrient input to cropland and consequently important for the evaluation of N budgets and N use efficiency (NUE) at different scales and over time. However, the spatiotemporal coverage of N deposition measurements is limited globally, whereas modeled N deposition values carry uncertainties. Here, we reviewed existing methods and related data sources for quantifying N deposition inputs to crop production on a national scale. We utilized different data sources to estimate N deposition input to crop production at national scale and compared our estimates with 14 N budget datasets, as well as measured N deposition data from observation networks in 9 countries. We created four datasets of N deposition inputs on cropland during 1961–2020 for 236 countries. These products showed good agreement for the majority of countries and can be used in the modeling and assessment of NUE at national and global scales. One of the datasets is recommended for general use in regional to global N budget and NUE estimates.
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County-level crop nitrogen budget history in the US during 1970-2019
This document describes the datasets used for “Half-century history of crop nitrogen use efficiency in the conterminous United States: Variations over time, space and crop types”. The datasets include county-level total nitrogen (N) input rate, nitrogen use efficiency, crop recovered N and N surplus of eight crop types,in the U.S. from 1970 to 2019. The datasets reproduce the results of the manuscript and can be used to explore other topics.
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- PAR ID:
- 10336601
- Publisher / Repository:
- figshare
- Date Published:
- Subject(s) / Keyword(s):
- Environmental Science
- Format(s):
- Medium: X Size: 26725754 Bytes
- Size(s):
- 26725754 Bytes
- Sponsoring Org:
- National Science Foundation
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