Changes in soil phosphorus fractions after 9 years of continuous nitrogen addition in a Larix gmelinii plantation

Table 2 Effects of N addition on nutrient contents in leaf, branch, stem and roots of Larix gmelinii

Nutrient contents	Treatment	Leaf	Branch	Stem	Roots
N (g kg⁻¹)	Control	11.34	2.84 b	0.92 b	7.41 b
N (g kg⁻¹)	N addition	11.35	3.46 a	1.37 a	8.39 a
P (g kg⁻¹)	Control	2.71	0.61 b	0.22 b	1.56 b
P (g kg⁻¹)	N addition	2.54	0.83 a	0.40 a	2.79 a

Plant tissues were sampled in August 2007. Values are means for n = 3. Different letters for N or P within a column indicate significant differences at P < 0.05. Data in Table 2 are cited from Zhao et al. (2010)

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