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Table 1 Douglas-fir stand variables and biomass (dry matter) measurements used to develop adjustment functions for the Forest Carbon Predictor

From: Plantation species-specific adjustment functions for the Forest Carbon Predictor in New Zealand

Site name and year planted Gowan Hill 1998 Southern Kaingaroa 1985 Forest Creek 2000 Forest Creek 1990 Trig E 1965 Trig E 1965 Bridge Hill 1980 Ribbonwood 1983 Northern Kaingaroa 1982 Whaka-rewarewa 1979
Elevation (m) 254 790 786 737 1040 1040 900 500 367 440
Stand age (years) 10 21 9 19 15 28 13 10 28 31
Mean temperature (°C) 9.8 9.4 8.0 8.2 8.0 8.0 8.0 8.5 11.9 12
Stocking rate (Trees ha−1) 1186 1250 1419 1051 2700 2700 4350 1838 800 717
Basal area (m2 ha−1) 24.8 52.6 12.0 37.9 39.8 100.0 40.0 21.6 55.5 46.7
Mean Top Ht (m) 8.4 15.5 6.5 14.5 7.7 12.6 7.5 8.4 25.6 26.2
Volib (m3 ha−1) 92.6 305 35.6 215 503 479
Foliage (t ha−1) 18.0 12.8 15.3 17.6 16.2 24.7 17.7 17.8 12.0 8.6
Live branches (t ha−1) 35.0 25.6 19.1 31.8 20.4 36.4 18.3 34.1 32.8 32.1
Dead branches (t ha−1) (na = with live) 6.9 39.9 0.1 21.8 na na na na 28.4 21.3
Reproductive parts (t ha−1)
Stem wood (t ha−1) 35.3 111.6 14.2 75.2 64.0 211.9 46.6 31.2 221.2 188.6
Stem bark (t ha−1) 6.7 16.1 2.9 13.6 8.7 34.3 8.3 4.7 24.0 22.2
Aboveground biomass (t ha−1) 101.9 205.9 51.5 160.0 109.6 307.2 90.9 87.8 318.4 272.7
Belowground biomass (t ha−1) 118 29.9 31.8 57.5
Woody debris (t ha−1) 0.0 0.0 0.0 0.0 0.0 0.0 9.7 18.3
Litter t ha−1) (ash-free) 0.0 14.1 0.0 32.4 18.6 26.0 20.6 0.0 10.0 14.8
Soil (0–5 cm) C%/(N%-0.014) 14.1 22.3 14.9 18.1 25.9 25.9 19.3 22.0 19.9 19.6