Spatial Planning Needed to Drastically Reduce Nitrogen and Phosphorus Surpluses in China’s Agriculture

16808 9 92031 4 266889 document 92031 Spatial paper EST final submission.pdf application/pdf 820c80e4248608273195ebd66b054efd MD5 1604184 2020-11-02 07:43:28 https://pure.iiasa.ac.at/id/eprint/16808/1/Spatial%20paper%20EST%20final%20submission.pdf 16808 1 1 application/pdf text en public cc_by_nc_4

Spatial paper EST final submission.pdf

accepted 92032 2 266891 document 92032 lightbox.jpg image/png 05b4192980122caf392451e078229fc0 MD5 33254 2020-11-02 07:44:10 https://pure.iiasa.ac.at/id/eprint/16808/2/lightbox.jpg 16808 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/92031 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/92031 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/92031 archive 353 disk0/00/01/68/08 2020-10-27 08:35:03 2021-10-26 03:00:06 2020-10-27 08:35:03 article show Jin X. Bai Z. Oenema O. Winiwarter W. 1775 0000-0001-7131-1496 Velthof G. Chen X. Ma L. Spatial Planning Needed to Drastically Reduce Nitrogen and Phosphorus Surpluses in China’s Agriculture pub prog_air Food,Soils,Wastes,Livestock,Crops China's fertilization practices contribute greatly to the global biogeochemical nitrogen (N) and phosphorus (P) flows, which have exceeded the safe-operating space. Here, we quantified the potentials of improved nutrient management in the food chain and spatial planning of livestock farms on nutrient use efficiency and losses in China, using a nutrient flow model and detailed information on >2300 counties. Annual fertilizer use could be reduced by 26 Tg N and 6.4 Tg P following improved nutrient management. This reduction N and P fertilizer use would contribute 30% and 80% of the required global reduction, needed to keep the biogeochemical N and P flows within the planetary boundary. However, there are various barriers to make this happen. A major barrier is the transportation cost due to the uneven distributions of crop land, livestock, and people within the country. The amounts of N and P in wastes and residues are larger than the N and P demand of the crops grown in 30% and 50% of the counties, respectively. We argue that a drastic increase in the recycling and utilization of N and P from wastes and residues can only happen following relocation of livestock farms to areas with sufficient cropland. 2020-10-06 published American Chemical Society (ACS) 10.1021/acs.est.0c00781 335 public Environmental Science & Technology 54 19 11894-11904 TRUE 1520-5851 FALSE no info:eu-repo/semantics/article