Table 5 The number of significant regression coefficients of trend-surface analysis and moran’s I for LAP, NAG, Nacq, AP and UREA (µmol g− 1soil h− 1) under three N fertilization treatments (NN, LN and HN) in two bioenergy croplands (SG and GG).
Crop type | Enzyme | Trend surface analysis | Moran’s I | ||||
---|---|---|---|---|---|---|---|
NN | LN | HN | NN | LN | HN | ||
SG | LAP | 4 | 0 | 1 | 2 | 5 | 2 |
NAG | 2 | 1 | 2 | 2 | 6 | 6 | |
Nacq | 3 | 1 | 2 | 1 | 5 | 7 | |
AP | 1 | 2 | 0 | 2 | 1 | 4 | |
UREA | 2 | 1 | 0 | 4 | 3 | 1 | |
GG | LAP | 3 | 2 | 5 | 4 | 3 | 1 |
NAG | 2 | 1 | 2 | 1 | 1 | 3 | |
Nacq | 2 | 1 | 2 | 1 | 1 | 2 | |
AP | 2 | 2 | 2 | 0 | 2 | 5 | |
UREA | 2 | 3 | 2 | 5 | 3 | 1 |