Earth & Environmental Sciences
soil
100%
soil carbon
95%
organic carbon
76%
biogas
74%
carbon stock
70%
peatland
60%
digester
58%
carbon
53%
nitrogen
38%
household
36%
greenhouse gas emissions
36%
fertilizer
34%
climate
33%
land use change
33%
Africa
32%
loss
32%
modeling
32%
peat
32%
wind farm
28%
crop
28%
climate change
27%
greenhouse gas
25%
land use
24%
mineral
23%
plantation
23%
simulation
23%
organic soil
23%
soil management
23%
carbon sequestration
23%
manure
21%
biochar
21%
farm
20%
farming system
19%
soil respiration
19%
crop production
18%
energy crop
18%
nitrous oxide
17%
coppice
17%
carbon dioxide
17%
mitigation
16%
agriculture
16%
forestry
16%
methane
16%
comparison
15%
peat soil
15%
nutrient
15%
grassland
14%
bioenergy
14%
decomposition
14%
soil nitrogen
14%
Agriculture & Biology
biogas
58%
soil
50%
soil organic carbon
49%
soil carbon
49%
Sub-Saharan Africa
37%
greenhouse gas emissions
37%
peatlands
32%
carbon
32%
Ethiopia
31%
mineral soils
31%
carbon sinks
30%
farming systems
30%
households
29%
organic carbon
29%
land use change
29%
nitrogen
26%
climate change
26%
carbon dioxide
23%
plantations
22%
soil fertility
21%
soil respiration
21%
energy crops
21%
Elaeis guineensis
21%
climate
20%
short rotation forestry
20%
cropland
19%
land use
19%
peat
18%
farms
18%
greenhouse gases
18%
United Kingdom
17%
carbon sequestration
17%
nitrogen fertilizers
17%
fertilizers
16%
tillage
16%
crops
16%
soil organic matter
16%
soil texture
16%
highlands
16%
nitrous oxide production
15%
energy
15%
soil properties
15%
willows
15%
nutrients
14%
ecosystem services
14%
farmers
14%
animal manures
13%
anaerobic digestion
13%
Wales
13%
Uganda
13%