Table 3 The required sample sizes under 5% sampling error for each combination of sample selection methods and plot types by three bias levels (No bias; 10% bias, and 20% bias). (Selection method and plot type acronyms are defined in Table 2)
Plot type | # trees/plot | Selection method | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | (Total/meas) | SRS | SYS | SOL | 3P | LIST | ||||||||||
No bias | 10% | 20% | No bias | 10% | 20% | No bias | 10% | 20% | No bias | 10% | 20% | No bias | 10% | 20% | ||
FAP | 75.3/75.3 | 43 | 48 | 52 | 49 | 49 | 50 | 57 | 57 | 58 | 27 | 28 | 29 | 25 | 26 | 27 |
3PN | 75.3/1.3 | 39 | 44 | 47 | 43 | 43 | 44 | 53 | 53 | 55 | 23 | 24 | 25 | 22 | 23 | 24 |
HPS | 20.9/20.9 | 61 | 79 | 84 | 76 | 77 | 78 | 72 | 73 | 75 | 47 | 50 | 46 | 44 | 44 | 42 |
BBAF | 20.9/1.2 | 52 | 63 | 67 | 62 | 63 | 63 | 64 | 64 | 65 | 37 | 39 | 37 | 35 | 35 | 35 |