Extended Data Table 2 Niche-specific estimates of BNF activity per unit of N fixer abundance in agricultural systems

From: Global terrestrial nitrogen fixation and its modification by agriculture

  1. Values are the percent nitrogen derived from the atmosphere (%Ndfa) for legume crops and BNF rates (kg N ha−1 yr−1) per megagram of N fixer net primary production (kg N ha−1 yr−1 Mg biomass−1) for forage legumes based on the sources listed. Central estimates are arithmetic means and lower and upper bounds in parentheses and 68% confidence intervals (analogous to ± 1 standard error); see details in Methods and Supplementary Methods. “n” indicates the sample size.
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