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. 2013 Oct 11;8(10):e75862. doi: 10.1371/journal.pone.0075862

Figure 2. Seasonal variations of total dissolved nitrogen, N-NH4 +, N-NO3 − and dissolved organic nitrogen concentrations in different flow paths.

Figure 2

Abbreviations: TDN = total dissolved nitrogen, DON = dissolved organic nitrogen, PP = precipitation, TF = throughfall, SF = stemflow, SR = surface runoff, FFL = forest floor leachate, SW1 = soil water at 40 cm belowground, SW2 = soil water at 100 cm belowground. Bars indicate ± SD, n = 3.