Table 5 The mean squared errors (MSEs) of the target variable estimates from the simulation replications
From: Comparison of the local pivotal method and systematic sampling for national forest inventories
Variable | LPMxy | LPMvp | LPMspruce | LPMpine | LPMbl | LPMall | SRS | Systematic |
|---|---|---|---|---|---|---|---|---|
All volume (m2∙ha−1) | 0.94 | 1.38 | 1.06 | 0.85 | 0.86 | 0.87 | 0.87 | 0.88 |
Pine volume (m2∙ha−1) | 0.43 | 0.51 | 0.41 | 0.42 | 0.39 | 0.35 | 0.40 | 0.36 |
Spruce volume (m2∙ha−1) | 0.62 | 1.02 | 0.71 | 0.61 | 0.55 | 0.59 | 0.63 | 0.57 |
Broadleaf volume (m2∙ha−1) | 0.19 | 0.22 | 0.19 | 0.19 | 0.19 | 0.18 | 0.17 | 0.17 |
Age (years) | 0.10 | 0.13 | 0.10 | 0.10 | 0.10 | 0.09 | 0.09 | 0.09 |
Mean height (dm) | 0.47 | 0.60 | 0.48 | 0.39 | 0.40 | 0.40 | 0.40 | 0.41 |
Mean diameter (10−3 cm) | 7.14 | 8.48 | 7.25 | 5.92 | 5.99 | 5.92 | 5.97 | 6.05 |
Basal area (10−3 m2∙ha−1) | 8.38 | 10.37 | 8.83 | 7.16 | 7.31 | 7.35 | 7.31 | 7.49 |
Age 140+ yrs. (10−2%) | 1.08 | 1.12 | 1.09 | 1.09 | 1.09 | 1.10 | 1.09 | 1.08 |
Mineral soils (%) | 0.27 | 0.34 | 0.21 | 0.20 | 0.19 | 0.19 | 0.20 | 0.20 |
Spruce mire (10− 2%) | 5.73 | 6.14 | 5.62 | 5.62 | 5.67 | 5.62 | 5.58 | 5.60 |
Pine mire (10−1%) | 0.95 | 2.10 | 1.01 | 1.07 | 0.99 | 0.97 | 1.06 | 0.99 |
Open mire (10−2%) | 1.01 | 1.85 | 1.44 | 1.47 | 1.47 | 1.47 | 1.45 | 1.46 |