From: Comparison of the local pivotal method and systematic sampling for national forest inventories
Unit | 1-nn population | Field plot population, NFI measurements | ||
---|---|---|---|---|
Auxiliary variable; MS-NFI-2011 | All volume | m3∙ha−1 | 130.8 | 131.1 |
Pine volume | m3∙ha−1 | 55.6 | 55.6 | |
Spruce volume | m3∙ha−1 | 46.7 | 46.9 | |
Broadleaf volume | m3∙ha−1 | 28.5 | 28.5 | |
Forested land proportion | % | 85.6 | 82.4 | |
MS-NFI-2015 | NFI field | |||
Target variable | All volume | m3∙ha−1 | 136.0 | 136.0 |
Pine volume | m3∙ha−1 | 56.3 | 57.2 | |
Spruce volume | m3∙ha−1 | 50.3 | 50.6 | |
Broadleaf volume | m3ha−1 | 29.7 | 28.5 | |
Age | years | 51.8 | 40.1 | |
Mean height | dm | 140.0 | 140.0 | |
Mean diameter | cm | 16.1 | 16.0 | |
Basal area | m2∙ha−1 | 17.4 | 17.4 | |
Age 140+ yrs. | % | 1.4 | 0.7 | |
Mineral soils | % | 63.3 | 60.8 | |
Spruce mire | % | 8.8 | 9.1 | |
Pine mire | % | 13.5 | 12.9 | |
Open mire | % | 1.2 | 1.4 |