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Table 1 Terrestrial nitrogen reservoirs (modified after Goldblatt et al. 2009; Palya et al. 2011)

From: Nitrogen in the Earth: abundance and transport

Reservoir % in reservoir
Atmosphere 27.0
Continental crust 14.2
Oceanic crust 2.2
Mantle 56.7
Oceans 0.005
Biomass (incl. soil, vegetation, and marine biota) 0.000062