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Oceanography 177	Environmental Sciences 105	Environmental Sciences & Ecology 84
Meteorology & Atmospheric Sciences 84	Ecology 80	Plant Sciences 79
地理学::自然地理学 77	Marine & Freshwater Biology 66	Geosciences, Multidisciplinary 59
Forestry 56	空间物理 49	Geology 40
Multidisciplinary Sciences 33	Soil Science 31	Water Resources 31
Agriculture 29	环境地球化学 25	Limnology 24
地球科学::地理学 21	生物科学::普通生物学 21	Biodiversity Conservation 20
Agronomy 18	Environment 18	Science & Technology - Other Topics 17
Geochemistry & Geophysics 16	Marine & Freshwater Biology; Oceanography 16	Engineering 15
Remote Sensing 15	Multidisciplinary 14	Physical Geography 14
生物科学 13	Geography, Physical 12	Geosciences 10
Paleontology 10	Environmental Sciences; Toxicology 9	Fisheries 9
环境科学 9	Biochemistry & Molecular Biology 8	Biodiversity & Conservation 8
Earth Sciences 8	Ecology; Limnology 8	Environment/ecology 8
Imaging Science & Photographic Technology 8	Zoology 8	Agronomy; Forestry; Meteorology & Atmospheric Sciences 7
Evolutionary Biology 7	Limnology; Oceanography 7	Microbiology 7
地球化学 7	生物学::生态学 7	生物科学::动物学 7
Agriculture/agronomy 6	Biotechnology & Applied Microbiology 6	地理学::自然地理学::水文地理学及水资源 6
生态学 6	空间环境 6	Engineering, Environmental 5
Environmental Sciences & Ecology; Marine & Freshwater Biology 5	Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources 5	Fisheries; Marine & Freshwater Biology 5
Geography, Physical; Geosciences, Multidisciplinary 5	Meteorology & Atmospheric Sciences; Oceanography 5	地球科学 5
地球科学::大气科学 5	Environmental Sciences; Marine & Freshwater Biology 4	Genetics & Heredity 4
Geology; Marine & Freshwater Biology; Oceanography 4	Pharmacology & Pharmacy; Toxicology 4	S812 4
大气科学 4	生物科学::植物学 4	自然地理学 4
Agriculture, Multidisciplinary 3	Biotechnology & Applied Microbiology; Marine & Freshwater Biology 3	Chemistry; Nuclear Science & Technology 3
Ecology; Engineering, Environmental; Environmental Sciences 3	Ecology; Environmental Sciences; Marine & Freshwater Biology; Water Resources 3	Ecology; Marine & Freshwater Biology; Oceanography 3
Entomology 3	Environmental Sciences & Ecology; Geology 3	Environmental Sciences; Meteorology & Atmospheric Sciences 3
Environmental; Environmental Sciences; Water Resources 3	Geography, Physical; Geosciences, Multidisciplinary; Paleontology 3	Geosciences, Multidisciplinary; Marine & Freshwater Biology; Oceanography 3
Parasitology 3	S158 3	Spectroscopy 3
土壤学 3	地质学 3	天文学 3
Agricultural Engineering 2	Agriculture; Forestry; Meteorology & Atmospheric Sciences 2	Biochemistry & Molecular Biology; Plant Sciences 2
Biodiversity Conservation; Ecology; Environmental Sciences 2	Chemistry 2	Engineering; Environmental Sciences & Ecology; Water Resources 2
Environmental Sciences & Ecology; Geology; Water Resources 2	Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography 2	Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences 2
Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology 2