Table 3 Results (F-value) of repeated measures ANOVA of the effects of N deposition, time, and their interactions on mass remaining, elements remaining, organic material remaining, C/N and C/P ratios, and soil enzyme activity during leaf litter decomposition.
Source | Mass remaining | Element remaining (%) | Organic remaining (%) | C/N | C/P | Soil enzyme activities | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Carbon | Nitrogen | Phosphorus | Lignin | Cellulose | Peroxidase | S-ACP | Urease | Invertase | ||||
N | 52.02** | 103.37** | 85.58** | 61.82** | 87.46** | 94.43** | 6.78 | 0.061 | 136.49** | 52.85* | 101.20** | 228.17** |
T | 302.83*** | 580.19*** | 280.17*** | 12.53* | 75.51* | 75.56** | 19.26* | 51.71** | 528.77*** | 338.45*** | 468.70*** | 479.36*** |
N × T | 2.22 | 16.58* | 1.90 | 4.33 | 48.44* | 3.26 | 3.81 | 2.20 | 23.57* | 15.93* | 11.92* | 69.60** |