Subfield
- Waste Management and Disposal53
- Pollution45
- Management, Monitoring, Policy and Law43
- Water Science and Technology37
- Global and Planetary Change21
- Environmental Chemistry11
- Health, Toxicology and Mutagenesis10
- Nature and Landscape Conservation10
- Environmental Engineering9
- Forestry2
- Soil Science2
- Aquatic Science1
- Ecology1
- Endocrinology1
- Geochemistry and Petrology1
- Law1