Table 2. Metabolic profiles of the agrarian and industrial socioecological regimes. Agrarian regime Industrial regime LD* DC** EU** 15 UK 1750† UK 1830† UK 2000† Population density [cap/km²] 30–40 100–300 40 76 116 30 76 247 Energy use per capita [GJ/cap/yr] 50–70 150–400 33 64 205 63 68 189 Energy use per unit area [GJ/ha/yr] 20–30 200–600 13 49 216 19 52 468 Biomass [%] 95–100 10–30 92 50 23 94 54 12 Fossil fuels [%] 0–5 60–80 8 50 77 6 46 78 Other [%] 0–5 0–20 ‡ ‡ ‡ ‡ ‡ 10 Material use per capita [t/cap/yr] 2–5 15–25 4.2 6.8 16 5.7 6.4 11.6 Material use per unit area [t/ha/yr] 1–2 20–50 1.3 4.8 18 1.7 4.9 28.7 Source: Fischer-Kowalski et al. 2007:231. * LD = least-developed countries. ** DC = developing countries (according to UN definitions). ** EU 15 = 15 member countries of the European Union. † Year ‡ included in numbers for fossil fuels.