eprintid: 13766 rev_number: 7 eprint_status: archive userid: 353 dir: disk0/00/01/37/66 datestamp: 2016-08-25 06:47:54 lastmod: 2021-08-27 17:41:35 status_changed: 2016-08-25 06:47:54 type: article metadata_visibility: show item_issues_count: 1 creators_name: Liu, W. creators_name: Yang, H. creators_name: Liu, J. creators_name: Azevedo, L.B. creators_name: Wang, X. creators_name: Xu, Z. creators_name: Abbaspour, K.C. creators_name: Schulin, R. creators_id: 8735 title: Global assessment of nitrogen losses and trade-offs with yields from major crop cultivations ispublished: pub divisions: prog_esm abstract: Agricultural application of reactive nitrogen (N) for fertilization is a cause of massive negative environmental problems on a global scale. However, spatially explicit and crop-specific information on global N losses into the environment and knowledge of trade-offs between N losses and crop yields are largely lacking. We use a crop growth model, Python-based Environmental Policy Integrated Climate (PEPIC), to determine global N losses from three major food crops: maize, rice, and wheat. Simulated total N losses into the environment (including water and atmosphere) are 44 Tg N yr− 1. Two thirds of these, or 29 Tg N yr− 1, are losses to water alone. Rice accounts for the highest N losses, followed by wheat and maize. The N loss intensity (NLI), defined as N losses per unit of yield, is used to address trade-offs between N losses and crop yields. The NLI presents high variation among different countries, indicating diverse N losses to produce the same amount of yields. Simulations of mitigation scenarios indicate that redistributing global N inputs and improving N management could significantly abate N losses and at the same time even increase yields without any additional total N inputs date: 2016-12-01 date_type: published publisher: Elsevier id_number: 10.1016/j.scitotenv.2016.08.093 creators_browse_id: 21 full_text_status: none publication: Science of The Total Environment volume: 572 pagerange: 526-537 refereed: TRUE issn: 00489697 coversheets_dirty: FALSE fp7_project: no fp7_type: info:eu-repo/semantics/article citation: Liu, W., Yang, H., Liu, J., Azevedo, L.B. , Wang, X., Xu, Z., Abbaspour, K.C., & Schulin, R. (2016). Global assessment of nitrogen losses and trade-offs with yields from major crop cultivations. Science of The Total Environment 572 526-537. 10.1016/j.scitotenv.2016.08.093 .