Figure 2 | Scientific Reports

Figure 2

From: Plant nitrogen retention in alpine grasslands of the Tibetan Plateau under multi-level nitrogen addition

Figure 2

Aboveground biomass (AGB) of species from ten families in response to long term N addition rate. Biomass was collected from 2011 to 2013, 2015, and 2017 in Namco. Data are shown as mean ± SE (n = 3). Bars with different letters indicate significant differences (P < 0.05) by Duncan’s new multiple range test among fertilization levels. Full statistical results for two-way ANOVA (N, N fertilization; Y, year) are presented in Appendix S1: Table S2.

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