Table 1 Treatment effects of nitrogen (N), aboveground herbivory (A) and belowground herbivory (B) on shoot biomass (aboveground biomass), decomposition rate of red tea, nitrate (NO3−) production, and litter of D. glomerata, P. lanceolata, and T. pratense.
Treatment | a) Shoot biomass | b) Red tea | c) NO3− | d) D. glomerata | e) P. lanceolata | f) T. pratense | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
F | p | F | p | F | p | F | p | F | p | F | p | |
Year | 344.4 | < 0.0001 | – | – | – | – | – | – | – | – | – | – |
A | 6.9 | 0.01 | 0.02 | 0.9 | 1.4 | 0.2 | 0.2 | 0.7 | 3.4 | 0.07 | 1.2 | 0.3 |
B | 0.01 | 0.9 | 4.4 | 0.04 | 1.5 | 0.2 | 0.2 | 0.6 | 1.7 | 0.2 | 0.4 | 0.5 |
N | 33.3 | < 0.0001 | 0.2 | 0.6 | 3.6 | 0.1 | 0.2 | 0.6 | 1.3 | 0.3 | 2.9 | 0.1 |
A × B | 2.5 | 0.1 | 0.01 | 0.9 | 0.005 | 0.9 | 1.1 | 0.3 | 0.1 | 0.8 | 2.1 | 0.2 |
N × A | 0.6 | 0.4 | 1.6 | 0.2 | 5.3 | 0.03 | 0.6 | 0.5 | 0.0 | 1.0 | 7.5 | 0.01 |
N × B | 3.2 | 0.1 | 0.1 | 0.7 | 0.4 | 0.5 | 0.5 | 0.5 | 0.2 | 0.6 | 0.9 | 0.3 |
N × A × B | 12.0 | 0.001 | 5.4 | 0.02 | 3.9 | 0.05 | 7.3 | 0.01 | 2.5 | 0.1 | 3.1 | 0.1 |