- Soil Science & Conservation 4
- Atmospheric Protection/Air Quality Control/Air Pollution 2
- Climate Change/Climate Change Impacts 2
- Environment, general 2
- Geochemistry 2
- Hydrogeology 2
- Water Quality/Water Pollution 2
- Agriculture 1
- Biogeosciences 1
- Earth Sciences, general 1
- Ecology 1
- Medicinal Chemistry 1
- Mineralogy 1
- Nanoscale Science and Technology 1
- Plant Physiology 1
- Plant Sciences 1
- Science, Humanities and Social Sciences, multidisciplinary 1
- Science, multidisciplinary 1