Fig. 2: The effect of nitrogen and phosphorus on aboveground biomass net change over tropical forest secondary succession.
From: Tropical forest carbon sequestration accelerated by nitrogen
Nutrient treatments are displayed on the x-axis, including control (C), nitrogen (N), phosphorus (P) and nitrogen plus phosphorus (NP). Points represent plot-level mean net biomass change for the fertilization period (2015–2019 for the young forests, 1997–2018 for the mature forest), with each bar representing the mean ± standard error of the mean (s.e.m.) across plots (n = 5 and 4 plots for young secondary and mature forests, respectively). Significant effects of nitrogen addition on biomass net change are present in both 0- and 10-year-old forests (p < 0.05). See Table 1, Supplementary Table 4 for full statistical results.
