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. 2010 Apr 12;107(17):8035–8040. doi: 10.1073/pnas.0913658107

Table 1.

Continental breakdown of global nitrogen flows

Nitrogen flows World Asia Europe Africa North America South America Oceania
INfer 67.84 41.08 8.38 2.16 12.17 3.02 1.03
INman 17.34 9.47 1.66 1.29 2.31 2.40 0.21
INdep 14.47 9.44 2.02 0.93 1.36 0.68 0.04
INfix 22.27 9.66 1.67 2.93 4.38 3.31 0.32
INsed 3.31 2.07 0.32 0.29 0.46 0.14 0.03
INres 11.37 3.03 1.48 1.03 4.75 0.88 0.19
OUTcrop 51.65 22.62 8.30 3.02 11.74 5.18 0.79
OUTres 29.22 14.27 3.69 2.04 6.52 2.39 0.30
OUTlea 22.99 14.61 2.68 1.01 2.64 1.71 0.34
OUTgas 20.28 14.12 1.66 1.25 1.89 1.21 0.15
OUTero 24.00 17.06 1.30 1.69 2.71 1.21 0.03
IN 136.60 74.76 15.52 8.63 25.43 10.44 1.83
OUT 148.14 82.69 17.63 9.01 25.49 11.70 1.61

Unit, Tg yr-1.