Table 1 The global soil NO3--N storage (Pg N) globally, and in croplands, grasslands, forests, and deserts

From: Deep soil contributions to global nitrogen budgets

 

Global area

Mean NO3− for each cell

Global NO3−-N

 

km2

kg N ha−1

Pg N

Global

1.23 × 108

1224

15.2

Cropland

0.20 × 108

1296

2.6

Grassland

0.18 × 108

1073

2.0

Forest

0.56 × 108

909

5.1

Desert

0.30 × 108

1862

5.5

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