Subfield
- Waste Management and Disposal48
- Pollution40
- Management, Monitoring, Policy and Law39
- Water Science and Technology34
- Global and Planetary Change21
- Environmental Chemistry10
- Health, Toxicology and Mutagenesis9
- Nature and Landscape Conservation9
- Environmental Engineering7
- Forestry2
- Soil Science2
- Aquatic Science1
- Ecology1
- Endocrinology1
- Geochemistry and Petrology1