Soil science, sedimentology 37 Agricultural science 9 Climate change 4 Environmental management 3 Physical geography & topography 3 Applied ecology 2 Biogeography 2 Botany & plant sciences 2 Earth sciences 2 Environment law 2 Fertilizers & manures 2 Hydrology & the hydrosphere 2 Meteorology & climatology 2 Natural disasters 2 Science: general issues 2 Stratigraphy 2 Sustainability 2 Earth sciences, geography, environment, planning 1 Ecological science, the Biosphere 1 Education 1 Environmental science, engineering & technology 1 Forestry & silviculture: practice & techniques 1 Gas industries 1 Gas technology 1 Geological surface processes (geomorphology) 1 Geology & the lithosphere 1 Inorganic chemistry 1 Mensuration & systems of measurement 1 Mineralogy & gems 1 Petroleum & oil industries 1