Earth and Planetary Sciences
Carbon Dioxide
100%
Vegetation
72%
Soil Carbon
59%
Methane
39%
Fine Root
36%
Alaska
36%
Climate Change
35%
Peatland
34%
Porewater
28%
Earth System Model
28%
Soil Organic Matter
24%
Soil Organic Carbon
24%
Terrestrial Ecosystem
22%
Land Surface
21%
Iron
20%
Atmospherics
20%
United States of America
18%
Soil Profile
17%
Peninsula
17%
Biogeochemistry
16%
Organic Matter
16%
Carbon Sequestration
15%
Temperate Forest
15%
Tundra Soil
15%
Soil Moisture
14%
Active Layer
13%
Emissions
12%
Soil Temperature
12%
Ecosystem Function
12%
Minnesota
11%
Hillslope
11%
Biome
10%
Permafrost Ecosystem
10%
Organic Carbon
10%
Coastal Wetland
10%
Plant Community
10%
Nutrient Cycling
10%
Vegetation Dynamics
10%
Dissolved Organic Carbon
9%
Photosynthesis
9%
Biomass Allocation
9%
Methanogenesis
9%
Scale Model
9%
Carbon Cycle
9%
Headwater
8%
Coal Mine
8%
Plant Physiology
8%
Growing Season
8%
Arctic Ecosystem
8%
Acid Mine Drainage
7%
Stoichiometry
7%
Vertical Distribution
7%
Soil Depth
7%
Litter Decomposition
7%
Arctic Region
7%
Temporal Variation
7%
Spatial Heterogeneity
7%
Salt Marsh
7%
Environmental Management
7%
Redox Condition
7%
Marshland
6%
Microtopography
6%
Greenhouse Gas
6%
Soil Respiration
6%
Deciduous Forest
6%
Spatial Variation
6%
Remote Sensing
6%
Soil Water
6%
Holocene
5%
Plant Root
5%
Biogeochemical Cycle
5%
Mycorrhiza
5%
Net Primary Production
5%
Land Cover
5%
Manganese Oxide
5%
Coastal Ecosystem
5%
Wetland Ecosystem
5%
Soil Surface
5%
Thermal Regime
5%
Agricultural and Biological Sciences
Fine Root
71%
Permafrost
40%
Soil Carbon
32%
Peatlands
26%
Climate Change
24%
Primary Productivity
24%
Ecosystem Model
19%
Plant Functional Type
19%
Methane
19%
Soil Profile
17%
Tropical Forest
17%
Terrestrial Ecosystem
17%
Plant Community
17%
Soil Organic Matter
17%
Marshland
16%
Tundra Soil
15%
Soil Moisture
14%
Soil Depth
14%
Soil Respiration
14%
Quercus
13%
Temperate Forest
12%
Soil Organic Carbon
11%
Sphagnum
11%
Active Layer
11%
Deciduous
11%
Litter Decomposition
10%
Photosystem
10%
Forest Ecosystem
10%
Mycorrhiza
9%
Primary Production
9%
Vascular Plant
9%
Liquidambar Styraciflua
8%
Rooting
8%
Carbon Sink
8%
Barrows
8%
Rhizosphere
7%
Nutrient Uptake
7%
Soil Water
7%
Global Change
7%
Microorganism
7%
Ecologist
7%
Root Growth
7%
Growing Season
7%
Acer Rubrum
7%
Leaf Area Index
7%
Root System
7%
Soil Quality
6%
Soil Temperature
6%
Alnus
6%
Allometry
6%
Plant Response
6%
Sweating
6%
Leaf Area
6%
Grains
6%
Microbial Community
6%
Plant Physiology
6%
Plantation
6%
Organic Horizons
6%
Aboveground Biomass
5%
Ecophysiology
5%
Bioavailability
5%
Bioenergy
5%
Deciduous Forest
5%
Plant Litter
5%
Boreal Forest
5%
Experimental Forests
5%
Carbon Cycle
5%
Specific Leaf Area
5%