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Table 1 Population values for auxiliary and target variables in the study region in the 1-nn population and the field plot population. The target is derived from the MS-NFI-2015 map for the 1-nn population and from the NFI field measurements for the field plot population

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