Earth & Environmental Sciences
drainage
100%
salt
94%
soil
57%
saline soil
44%
irrigation
43%
drainage system
42%
drain
39%
salinity
36%
siltstone
22%
alluvial deposit
21%
basin
20%
mudstone
19%
water table
19%
soil salinity
18%
valley
17%
soil condition
15%
sediment
14%
sugar beet
14%
residual soil
13%
stratification
13%
alfalfa
12%
river
12%
soil map
12%
groundwater
12%
barley
12%
drainage water
11%
parent material
11%
piedmont
11%
leveling
11%
crop
11%
agriculture
11%
drainage basin
10%
water
9%
hydraulic conductivity
9%
tributary
9%
tolerance
9%
soil property
9%
magnesium
9%
synthetic aperture radar
8%
calcium
7%
leaching
7%
alkali soil
7%
alkalinization
7%
silty clay loam
7%
halophyte
7%
sulfate
7%
sedimentation basin
7%
permeability
6%
silty soil
6%
colluvial deposit
6%
silty clay
6%
piezometer
6%
estuarine environment
6%
lacustrine environment
6%
salt content
6%
hydraulic head
6%
field method
6%
potential evapotranspiration
6%
denudation
5%
salinization
5%
high mountain
5%
unsteady flow
5%
ditch
5%
sodium chloride
5%
steady flow
5%
clay soil
5%
pore space
5%
subsoil
5%
cropping practice
5%
mobilization
5%
calcium carbonate
5%
alkalinity
5%
terrace
4%
gypsum
4%
soil profile
4%
groundwater flow
4%
trench
4%
seepage
4%
sedimentary rock
4%
evapotranspiration
4%
maize
4%
pH-value
4%
surface layer
4%
outcrop
4%
spacing
4%
border
4%
shallow water
4%
infiltration
4%
seasonal variation
4%
evaporation
4%
chloride
4%
wind velocity
4%
plain
3%
water resource
3%
texture
3%
recommendation
3%
sedimentation
3%
porosity
3%
hazard
3%
cold
3%
young
3%
erosion
3%
surface water
3%
winter
3%
vegetation
3%
land
2%
climate
2%
loss
2%
material
2%
test
2%
temperature
1%
rate
1%
method
1%