Global Gridded Nitrogen Indicators: Influence of Crop Maps.

ABSTRACT: Displaying Nitrogen (N) indicators on a global grid poses unique opportunities to quantify environmental impacts from N application in different world regions under a variety of conditions. Such calculations require the use of maps showing the geo-spatial distribution of crop production. Although there are several crop maps in the scientific literature to choose from, the consequences of this choice for the calculation of N indicators still need to be evaluated. In this study we analyze the differences in results for N Use Efficiency (NUE) and N surplus calculated on the global scale using two different crop maps (SPAM and M3). For our calculations we used publicly available statistical and literature data combined with each crop map and carefully traced the origins of the differences in t

SUBMITTER: Kaltenegger K 

PROVIDER: S-EPMC7757259 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature