Earth & Environmental Sciences
peatland
100%
greenhouse gas
72%
greenhouse gas emissions
64%
soil
56%
gene
53%
nitrogen
47%
denitrification
47%
riparian forest
39%
nitrate
39%
nitrous oxide
39%
forest soil
31%
methane
30%
soil emission
30%
peat
26%
liming
25%
wetland
25%
constructed wetland
24%
microbial community
23%
ammonium
23%
soil quality
23%
saltmarsh
22%
rewetting
22%
carbon
22%
nitrification
22%
ecosystem
20%
water content
20%
productivity
19%
water
18%
grassland
18%
analysis
17%
eddy covariance
17%
biomass
17%
isotope
17%
nitrogen cycle
16%
oxidation
16%
removal
16%
stem
15%
canopy
15%
soil water
15%
crop
15%
climate zone
14%
vegetation
14%
agricultural soil
14%
inorganic fertilizer
14%
mudflat
14%
cover crop
14%
ammonia
13%
restoration
13%
fen
13%
roof
13%
Agriculture & Biology
peatlands
41%
nitrous oxide
32%
greenhouse gases
28%
Spartina alterniflora
28%
methane
26%
salt marshes
24%
methane production
23%
green roofs
15%
snowmelt
15%
constructed wetlands
14%
Phalaris arundinacea
14%
smelters
14%
estuaries
13%
Archaea
13%
paddy soils
13%
cathodes
12%
freeze-thaw cycles
12%
soil fungi
12%
nitrogen
12%
forest soils
12%
gas production (biological)
11%
South Korea
11%
cover crops
11%
wetlands
11%
peat
11%
community structure
11%
bacterial communities
10%
polluted soils
10%
tracer techniques
10%
leaching
10%
microbial communities
10%
heavy metals
9%
anaerobic ammonium oxidation
9%
vegetation
9%
graphene
9%
indigenous species
8%
methanogens
8%
denitrification
8%
bacteria
8%
minerals
7%
carbon dioxide
7%
soil bacteria
6%
arsenic
6%
genes
6%
fungi
6%
clay
5%
nitrates
5%
stainless steel
5%
crops
5%
sediments
5%
Engineering & Materials Science
Soils
46%
Greenhouse gases
40%
Fluxes
37%
Soil quality
36%
Wetlands
32%
Nitrates
28%
Nitrogen
28%
Denitrification
27%
Genes
27%
Oxides
25%
Gas emissions
24%
Sediments
19%
Ecosystems
18%
Fertilizers
16%
Nitrification
15%
Antibiotics
15%
Methane
14%
Wastewater treatment
14%
Biomass
14%
Oil shale
14%
Nutrients
13%
Bacteria
12%
Phosphorus
11%
Crops
11%
Ashes
10%
Water
10%
Organic carbon
10%
Roofs
10%
Salts
9%
Carbon
8%
Productivity
8%
Quantum cascade lasers
7%
Estuaries
6%
Ozone
5%