Leaf litter chemistry and its effects on soil microorganisms in different ages of Zanthoxylum planispinum var. Dintanensis

Table 2 Nitrogen and phosphorus content of mature leaves of Z. planispinum of different ages

Indicator	5–7	10–12	20–22	28–32
Leaf nitrogen (g/kg)	23.70 ± 0.57a	22.25 ± 0.50a	21.00 ± 1.98a	22.10 ± 2.97a
Leaf phosphorus (g/kg)	1.64 ± 0.35a	1.02 ± 0.23a	1.67 ± 0.40a	1.63 ± 0.25a

Note: Sample size is three. Data are presented as mean ± standard deviation. Different letters indicate significant differences among plantation ages at P < 0.05

ISSN: 1471-2229