Landbrug og biologi
economic feasibility
100%
environmental sustainability
98%
Alnus
94%
biorefining
90%
exergy
75%
energy
46%
fossil fuels
36%
plantations
26%
soil
23%
coppicing
23%
biomass
19%
value-added products
19%
carbon sequestration
18%
anaerobic digestion
18%
pyrolysis
17%
feedstocks
14%
carbon dioxide
12%
gases
11%
nitrogen
9%
leaves
6%
methodology
4%
Geo- og miljøvidenskab
environmental sustainability
86%
energy production
81%
exergy
76%
demand
51%
economics
45%
energy
38%
plantation
36%
fossil fuel
35%
literature study
26%
soil
25%
biomass
24%
dry matter
23%
anaerobic digestion
19%
product
19%
carbon sequestration
18%
pyrolysis
17%
society
15%
sustainability
14%
nitrogen
11%
indicator
11%
removal
10%
gas
10%
comparison
8%
rate
6%
method
4%
Teknik og materialevidenskab
Sustainable development
70%
Exergy
50%
Economics
50%
Soils
37%
Fossil fuels
31%
Biomass
28%
Anaerobic digestion
20%
Feedstocks
15%
Pyrolysis
14%
Nitrogen
14%
Carbon
11%
Gases
9%