Reconciling regional nitrogen boundaries with global food security

17435 12 95280 3 293598 document 95280 Chang_Main_Article.pdf application/pdf 92bceb60cc3a6724e6cbf8aafc93c0d4 MD5 509552 2021-09-16 09:35:37 https://pure.iiasa.ac.at/id/eprint/17435/1/Chang_Main_Article.pdf 17435 1 1 application/pdf text en public cc_by_nc_nd_4

Chang_Main_Article.pdf

accepted 95281 2 293602 document 95281 lightbox.jpg image/png baa8d991433382414d41bf0671b089fe MD5 40780 2021-09-16 09:46:06 https://pure.iiasa.ac.at/id/eprint/17435/2/lightbox.jpg 17435 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en staffonly

lightbox.jpg

preview.jpg

medium.jpg

small.jpg

indexcodes.txt

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/95280 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/95280 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/95280 archive 353 disk0/00/01/74/35 2021-09-16 07:58:26 2025-03-12 05:00:18 2021-09-16 07:58:26 article show 1 Chang J. 2233 0000-0003-4463-7778 Havlik P. 1868 0000-0001-5551-5085 Leclere D. 2000 0000-0002-8658-1509 de Vries W. Valin H. 1923 0000-0002-0618-773X Deppermann A. 2072 Hasegawa T. Obersteiner M. 7255 0000-0001-6981-2769 Reconciling regional nitrogen boundaries with global food security pub ASA EM BNR IBF While nitrogen inputs are crucial to agricultural production, excess nitrogen contributes to serious ecosystem damage and water pollution. Here, we investigate this trade-off using an integrated modelling framework. We quantify how different nitrogen mitigation options contribute to reconciling food security and compliance with regional nitrogen surplus boundaries. We find that even when respecting regional nitrogen surplus boundaries, hunger could be substantially alleviated with 590 million fewer people at risk of hunger from 2010 to 2050, if all nitrogen mitigation options were mobilized simultaneously. Our scenario experiments indicate that when introducing regional N targets, supply-side measures such as the nitrogen use efficiency improvement are more important than demand-side efforts for food security. International trade plays a key role in sustaining global food security under nitrogen boundary constraints if only a limited set of mitigation options is deployed. Policies that respect regional nitrogen surplus boundaries would yield a substantial reduction in non-CO2 GHG emissions of 2.3 GtCO2e yr−1 in 2050, which indicates a necessity for policy coordination. 2021-09-13 published Nature Publishing Group 10.1038/s43016-021-00366-x 3116 119 174 316 64 219 public Nature Food TRUE 2662-1355 https://dare.iiasa.ac.at/125/ data Effects of phosphorus limitations on Life, Earth system and Society (IMBALANCE-P, FP7 610028) yes info:eu-repo/grantAgreement/EC/FP7/610028/EU//IMBALANCE-P info:eu-repo/semantics/article info:eu-repo/semantics/embargoedAccess