Earth & Environmental Sciences
greenhouse gas
100%
peatland
90%
soil
84%
greenhouse gas emissions
74%
riparian forest
63%
gene
63%
nitrogen
62%
denitrification
61%
nitrous oxide
58%
nitrate
50%
soil emission
49%
methane
48%
liming
41%
wetland
41%
constructed wetland
38%
soil quality
37%
saltmarsh
36%
forest soil
34%
ecosystem
32%
ammonium
31%
productivity
30%
grassland
29%
water content
28%
eddy covariance
28%
nitrogen cycle
27%
rewetting
27%
biomass
26%
peat
26%
stem
25%
canopy
25%
isotope
25%
analysis
24%
crop
24%
climate zone
23%
agricultural soil
23%
inorganic fertilizer
23%
mudflat
23%
cover crop
22%
nitrification
22%
fen
22%
roof
21%
indicator
21%
grassland soil
21%
urban drainage
21%
plant species
21%
electromagnetic method
21%
water
21%
brackish water
21%
organic fertiliser
21%
environmental factor
21%
Engineering & Materials Science
Soils
75%
Greenhouse gases
65%
Fluxes
60%
Soil quality
58%
Wetlands
51%
Oxides
41%
Nitrogen
40%
Denitrification
40%
Gas emissions
38%
Genes
36%
Sediments
31%
Ecosystems
29%
Fertilizers
25%
Nitrates
25%
Nitrification
24%
Antibiotics
24%
Methane
23%
Biomass
22%
Oil shale
22%
Nutrients
21%
Bacteria
20%
Wastewater treatment
19%
Phosphorus
19%
Crops
18%
Ashes
17%
Water
17%
Organic carbon
17%
Roofs
16%
Salts
15%
Productivity
13%
Quantum cascade lasers
11%
Estuaries
10%
Carbon
10%
Ozone
8%
Hydraulics
5%
Upper atmosphere
5%
Temperature
5%
Watersheds
5%
Acidification
5%
Agriculture & Biology
Spartina alterniflora
45%
greenhouse gases
44%
methane
42%
salt marshes
39%
methane production
37%
nitrous oxide
33%
green roofs
24%
constructed wetlands
23%
peatlands
23%
Phalaris arundinacea
23%
smelters
22%
estuaries
22%
paddy soils
21%
cathodes
20%
soil fungi
20%
nitrogen
19%
Archaea
19%
gas production (biological)
19%
South Korea
19%
cover crops
18%
wetlands
18%
peat
17%
community structure
17%
bacterial communities
17%
polluted soils
16%
leaching
16%
heavy metals
14%
anaerobic ammonium oxidation
14%
vegetation
14%
graphene
14%
indigenous species
14%
methanogens
13%
minerals
12%
carbon dioxide
12%
bacteria
11%
soil bacteria
11%
arsenic
10%
fungi
10%
clay
9%
nitrates
9%
stainless steel
9%
crops
9%
sediments
8%
Desulfovirga
8%
genes
7%
East China Sea
6%
seasonal variation
6%
Poaceae
6%
copper
6%
soil pH
6%