Table 2 The three-way ANOVA analysis (p-values) for N, P concentration and N:P ratios in new leaves, older leaves, stems, and mixed fine roots in the secondary tropical forest of South China (S, Species; N, N addition; P, P addition; D, Soil depth).

From: Response of plant nutrient stoichiometry to fertilization varied with plant tissues in a tropical forest

Plant Tissues

Sources

N concentration

P concentration

N:P Ratios

New leaves

N

0.10

0.07

0.01

P

0.75

<0.001

<0.001

S

<0.001

<0.001

0.06

N × P

0.06

0.01

0.07

N × S

0.20

0.20

0.66

S × P

0.75

0.34

0.60

N × P × S

0.22

0.68

0.21

Older leaves

N

0.15

0.06

0.03

P

0.84

<0.001

<0.001

S

<0.001

0.02

0.01

N × P

0.63

0.07

0.59

N × S

0.92

0.36

0.61

S × P

0.94

0.31

0.29

N × P × S

0.79

0.42

0.14

Stems

N

0.26

0.03

0.10

P

0.35

<0.001

<0.001

S

<0.001

0.53

0.01

N × P

0.19

0.02

0.84

N × S

0.31

0.12

0.38

S × P

0.70

0.54

0.13

N × P × S

0.18

0.04

0.44

Mixed fine roots

N

0.01

0.16

0.18

P

0.01

<0.001

<0.001

D

0.01

0.01

0.49

N × P

0.65

0.02

0.02

N × D

0.85

0.76

0.91

D × P

0.50

0.08

0.04

N × P × D

0.38

0.56

0.80

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