Subject
soil biology
7
soil microbiology
6
soil chemistry
5
soil physics
5
soil
4
plant soil relationship
3
soil pollution
3
soil science
3
Soil conservation
2
soil protection
2
waste disposal
2
Agriculture
1
Aquatic biology
1
Ecology
1
Endangered ecosystems
1
Environmental management
1
Environmental sciences
1
Forests and forestry
1
Geography
1
Landscape ecology
1
Life sciences
1
Sustainable development
1
anthropogenic emissions
1
ecology
1
fertilization
1
heavy metal concentration
1
humus
1
irrigation
1
microbial ecology
1
minerals
1
petrology
1
plant growth
1
polycyclic aromatic hydrocarbon (PAH )
1
root growth
1
soil water
1
urban area
1