International Journal of Forestry Research / 2012 / Article / Tab 3

Research Article

Large-Scale Forest Modeling: Deducing Stand Density from Inventory Data

Table 3

Summary of inventory data, estimated mean closure ( ), and large-scale model agreement with data for the countries. Symbols and units in Table 1.

CountryNumbers ofInventoryModel fit to data (PRMSE)
Regions3SpeciesForest units1Cohorts per unit2Mean Mean Modelled closure Model B
Model B

Czech Rep.145708.51703.760.6810.813.6
Denmark15511.01114.040.569.811.9
Estonia14411.31112.260.7618.927.2
Finland2367.8481.490.5130.555.8
France2261328.21385.510.6231.835.7
Germany1381046.51362.970.5921.324.2
Hungary12211.01212.280.7923.850.7
Ireland1447.01094.760.7019.727.9
Italy1447.01303.070.6925.439.8
Latvia15514.0972.110.7517.832.3
Lithuania1557.6901.700.7221.230.3
Luxembourg1446.01594.210.6317.726.4
Netherlands1886.91283.380.5417.041.1
Norway3263.7581.980.5723.230.9
Poland1228.01182.580.7615.522.1
Portugal1113.0251.280.7936.434.2
Romania1557.6963.160.6022.453.6
Slovak Rep.14413.01282.920.7511.012.2
Sweden62129.3711.770.6217.523.7
U.K.44169.11113.560.6320.826.0

1all forest age cohorts belonging to the same species and region. 2mean number of age cohorts per forest unit. 3Sizes and regions are variable among and within countries [15].

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