Table 1 Soil sample total nitrogen content distribution of different data set
Data set | Size | Range(\(g.kg^{-1}\)) | Mean(\(g.kg^{-1}\)) | CV(\(\%\)) |
|---|---|---|---|---|
Total | 111 | 0.13 \(\sim\) 1.45 | 0.582 | 41.6 |
Calibration set | 78 | 0.13 \(\sim\) 1.45 | 0.589 | 45.1 |
Validation set | 33 | 0.31 \(\sim\) 0.97 | 0.567 | 27.7 |
Calibration set (six particle sizes) | 468 | 0.13 \(\sim\) 1.45 | 0.589 | 45.1 |
Validation set (six particle sizes) | 198 | 0.31 \(\sim\) 0.97 | 0.567 | 27.7 |