Earth & Environmental Sciences
biochar
61%
microcosm
60%
field study
50%
mitigation
44%
soil
24%
pore space
12%
field experiment
10%
soil amendment
6%
nitrogen
6%
polymerase chain reaction
6%
climate change mitigation
6%
long-term effect
6%
soil fertility
6%
nitrous oxide
5%
biogas
5%
bulk density
5%
aeration
5%
nitrite
5%
pyrolysis
5%
greenhouse gas emissions
5%
marker
4%
DNA
4%
trial
4%
gene
4%
bacterium
3%
biomass
3%
water
3%
laboratory
3%
Agriculture & Biology
soil weathering
100%
biochar
69%
nitrous oxide
66%
Helianthus annuus
11%
soil
8%
soil minerals
7%
nitrogen
6%
edaphic factors
6%
greenhouse gas emissions
6%
pyrolysis
6%
Archaea
6%
Fagus
6%
aeration
5%
nitrites
5%
bulk density
5%
long term effects
5%
soil fertility
5%
field experimentation
5%
climate change
4%
water
4%
quantitative polymerase chain reaction
4%
genetic markers
4%
biomass
3%
bacteria
3%
DNA
2%
Engineering & Materials Science
Aging of materials
46%
Soils
45%
Nitrogen
15%
Wood
15%
Experiments
14%
Polymerase chain reaction
12%
Biogas
9%
Bacteria
9%
Climate change
9%
Water
8%
DNA
8%
Gas emissions
8%
Greenhouse gases
8%
Minerals
8%
Genes
7%
Pyrolysis
7%
Oxides
7%