Table 1 Location and main dasometric characteristics of the sites of study for aboveground and belowground biomass measurement and of the literature studies considered for comparison of aboveground biomass predictions
Biomass component | Data | Site N | Planted/coppice | N plots by site | N trees by site | X | Y | N (stem/ha) | Age (years) | hdom (m) | G (m2/ha) |
|---|---|---|---|---|---|---|---|---|---|---|---|
Aboveground | Model calibration | 1 | Planted | 3 | 13 | 586.5 | 4.810.250 | 1100–1250 | 5.5–7.0 | 9.5–12.2 | 8.1–10.7 |
2 | Coppice | 3 | 10 | 541.3 | 4.697.500 | 800–1150 | 5.5–7.3 | 8.7–20.3 | 4.2–22.0 | ||
3 | Planted | 5 | 16 | 569.5 | 4.767.500 | 1050–1300 | 5.5–11.3 | 11.4–23.0 | 9.6–21.0 | ||
4 | Planted | 5 | 17 | 505.8 | 4.700.550 | 900–1150 | 5.9–10.7 | 6.6–22.7 | 2.3–24 | ||
5 | Planted | 3 | 9 | 534.4 | 4.750.050 | 700–1050 | 5.9–7.1 | 6.9–11.1 | 2.3–7.7 | ||
6 | Planted | 5 | 16 | 513.1 | 4.680.270 | 800–1300 | 7–10.7 | 10.1–22.2 | 7.3–23.7 | ||
7 | Coppice | 3 | 11 | 655 | 4.822.500 | 1100–1350 | 7.3–11.3 | 14.6–26.3 | 8.3–26.2 | ||
8 | Coppice | 3 | 11 | 523.9 | 4.623.080 | 950–1250 | 10.2–12.3 | 16.7–28.1 | 21.5–31.1 | ||
9 | Planted | 3 | 12 | 641.5 | 4.798.750 | 1000–1350 | 10.3–14.3 | 14.7–24.9 | 12.4–29.4 | ||
10 | Planted | 3 | 10 | 545.1 | 4.775.980 | 850–1000 | 9.3–30 | 20.1–32.8 | 15.6–52.1 | ||
11 | Coppice | 3 | 12 | 584.8 | 4785.81 | 1050–1150 | 9.3–25 | 19.7–31.5 | 16.5–59.1 | ||
12 | Planted | 2 | 8 | 508.4 | 4.740.700 | 1000–1200 | 8.5–22 | 15.8–24.7 | 12.1–45.5 | ||
Total model calibration | 12 | 41 | 145 | 700–1350 | 5.5–30 | 6.6–32.8 | 2.3–59.1 | ||||
Model comparison | 13 | Planted | 5 | 17 | 531 | 4681.22 | 700–1200 | 6.2–11.4 | 9.3–22.4 | 3.7–27.1 | |
14 | Planted | 3 | 10 | 521.5 | 4.762.000 | 1150–1300 | 7.5–9.9 | 13.9–20.5 | 9.4–27.6 | ||
15 | Coppice | 4 | 12 | 592 | 4.386.050 | 1000–1350 | 6.5–23 | 17.5–27.4 | 12.5–51.3 | ||
16 | Planted | 3 | 10 | 510.8 | 4.663.090 | 900–1100 | 6.7–25.5 | 14.3–30.9 | 14.8–43.4 | ||
17 | Coppice | 4 | 12 | 609.8 | 4.834.925 | 900–1200 | 7.5–21.3 | 17.6–28.9 | 13.7–42.6 | ||
18 | Planted | 3 | 11 | 573.5 | 4.750.350 | 1100–1300 | 8.7–15.5 | 14.8–22.1 | 13.1–45.3 | ||
19 | Coppice | 3 | 13 | 563.2 | 4.794.050 | 1000–1300 | 8.5–29 | 18.7–34.2 | 13.4–52.2 | ||
Total model comparison | 7 | 25 | 85 | 700–1350 | 6.2–29 | 9.3–34.2 | 3.7–52.2 | ||||
Total aboveground | 19 | 230 | 700–1350 | 5.5–30 | 6.6–34.2 | 2.3–59.1 | |||||
Ref 1 | 9 | 30 | N Spain | 446–1825 | 6.0–18 | 1.1–22.8 | 0.1–27.8 | ||||
Ref 2 | 6 | 78 | N Spain | 1147–2400 | 13–24 | 21.6–35.6 | 22.3–49.6 | ||||
Ref 3 (planted) | 26 | 254 | Portugal | 563–3240 | 0.5–19 | 1.8–37.3 | 0.0–51.8 | ||||
Ref 3 (coppice) | 6 | 187 | Portugal | 1605–6400 | 2.5–13.0 | 4.5–31.6 | 4.5–32.9 | ||||
Belowground | Planted | 1 | Planted | 3 | 12 | 544.5 | 4.650.100 | 1000–1300 | 9.4–18.5 | 20.9–43.6 | 18.2–46.8 |
2 | Planted | 4 | 15 | 500.6 | 4.775.010 | 900–1200 | 9.9–17.7 | 22.6–45.4 | 20.4–51.6 | ||
3 | Planted | 2 | 9 | 634.5 | 4.826.550 | 850–1000 | 9.7–17.5 | 21.7–36 | 19.2–32.3 | ||
Total planted | 3 | Planted | 9 | 36 | 1000–1300 | 9.4–18.5 | 20.9–45.4 | 18.2–51.6 | |||
Coppice | 4 | Coppice | 3 | 11 | 512.6 | 4.720.510 | 2000–4500 | 9.5–14.7 | 21.0–45.8 | 18.3–37.6 | |
5 | Coppice | 2 | 6 | 534.5 | 4.730.100 | 1800–5500 | 10.5–14.2 | 21.3–41.1 | 18.6–45.4 | ||
6 | Coppice | 4 | 14 | 510.8 | 4.770.100 | 3000–4250 | 10.1–13.5 | 23.4–35.5 | 21.4–32 | ||
Total coppice | 3 | Coppice | 9 | 31 | 1800–5500 | 9.5–14.7 | 21.0–45.8 | 18.3–45.4 | |||