Figure 2 | Scientific Reports

Figure 2

From: Effects of soil nitrogen (N) deficiency on photosynthetic N-use efficiency in N-fixing and non-N-fixing tree seedlings in subtropical China

Figure 2

Regression analysis of the leaf nitrogen (N) concentration per area (Narea) and light-saturated photosynthesis (Amax′) of the seedling leaves from the four studied tree species. The determination coefficients (R2) and P-values are shown. The lines fitted for N-fixing and non-N-fixing trees are significantly different (P < 0.05) according to the result of a one-way analysis of covariance (ANCOVA) with Amax′ as a dependent variable, whether it could fix N as a fixed factor, and Narea as a covariate

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