Local Models for Forest Canopy Cover with Beta Regression

Summary of the Suonenjoki modelling data. Pine (n = 52) Spruce (n = 48) Mean Min Max Sd Mean Min Max Sd Canopy cover (%) 51.0 2.5 84 19.3 69.9 34.2 96.8 15.9Basal area (m 2 /ha) 15.0 0.3 34 8.4 20.9 1.0 44.8 10.3Stand density (stems/ha) 2700 260 10500 2380 2880 450 15900 2740Age (years) 65 7 160 40.2 51 11 112 26Mean diameter (cm) 16.7 1.4 36.6 10.1 17.1 2.6 31.3 8.0Mean height (m) 13.7 1.8 29.2 7.4 15.0 2.9 26.7 7.1Deciduous trees (%) 1.8 0 25.9 4.6 8.9 0 47.3 10.6 Table 2. Summary of the Suonenjoki comparison plots. Pine (n = 10) Spruce (n = 9) Mean Min Max Sd Mean Min Max Sd Canopy cover (%) 57.6 35.6 83.3 15.9 65.7 34.2 88.4 17.1Basal area (m 2 /ha) 17.7 9.3 29 6.4 19.4 1.0 27.3 8.9Stand density (stems/ha) 1700 260 4650 1500 3370 580 15900 4900Age (years) 65 25 124 38 52 12 95 26Mean diameter (cm) 17.9 6.3 34.6 9.2 17.2 3.3 27.3 8.5Mean height (m) 15.1 5.8 26.4 6.4 15.7 3.4 25.6 7.7Deciduous trees (%) 0.4 0 3.6 1.1 13.1 0 34.6 11.2

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