Table 1 Residual land carbon sink

Residual land carbon sink

IPCC 2001 [19]

-0.3–3.8

incomplete

House et al. [20]

0.3–4.0

1.6–4.8

Additional land carbon uptake due to increased nitrogen deposition (globally)

Townsend et al. [11]

n/a

0.3–1.3

Holland et al. [12]

n/a

1.5–2.0

This study

0.62–2.33

0.75–2.21

Additional land carbon uptake due to increased nitrogen deposition (temperate forests)

Nadelhoffer et al. [10]

n/a

0.25

This study

0.34–1.62

0.4–1.85