- Atmospheric Protection/Air Quality Control/Air Pollution 3
- Environment, general 2
- Soil Science & Conservation 2
- Biodiversity 1
- Climate Change/Climate Change Impacts 1
- Ecotoxicology 1
- Environmental Chemistry 1
- Environmental Health 1
- Hydrogeology 1
- Sustainable Development 1
- Waste Management/Waste Technology 1
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 1
- Water Quality/Water Pollution 1