Fig. 2: Nitrogen isotope ratios of plants and soils. | Nature Communications

Fig. 2: Nitrogen isotope ratios of plants and soils.

From: Global distribution and drivers of relative contributions among soil nitrogen sources to terrestrial plants

Fig. 2

Variations of site-based mean δ15N of leaf N (δ15Nleaf), whole-plant N (δ15Nplant), PUN (δ15NPUN), soil NO3- (δ15Nsoil-NO3-), soil NH4+ (δ15Nsoil-NH4+), and soil EON (δ15Nsoil-EON) with MAT are shown in panels (a)–(f), respectively. Mean and SD values were based on sample replicates at each site (n = 1–2118 for plants, and n = 2–21 for soils). Site distribution is shown in Fig. s1. The regression was analyzed by fitting effects with 95% confidence intervals.

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