Source of variation

df

F

P

Aboveground

Time (T)

2

53.24

<0.01

Specie types (S)

3

8.36 × 10³

<0.01

N addition (Ni)

5

1.52 × 10³

<0.01

T*S

6

2.43

0.27

T*Ni

10

13.97

<0.01

S*Ni

15

935.56

<0.01

T*S*Ni

30

4.55

<0.01

Belowground

Time (T)

2

0.16

0.854

Specie types (S)

2

295.93

<0.01

N addition (Ni)

5

12.57

<0.01

T*S

4

6.38

<0.01

T*Ni

10

1.88

0.052

S*Ni

10

30.60

<0.01

T*S*Ni

20

0.96

0.514