The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 5 years. As of Dec 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (1.131.699) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
Rankings
climate change | energy economics | integrated assessment | technological change | sustainable developmen
H-Index Metrics
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H-Index129
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i10 Index304
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Citation Counts155,637
Rankings
Rankings
Rankings
Rankings
Environmental Chemistry | speciation | Arsenic | rice | Analytical Chemistr
H-Index Metrics
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H-Index80
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i10 Index281
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Citation Counts26,453
Rankings
Environmental Psychology | Nature & Health | Blue Space | Risk perception | Happines
H-Index Metrics
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H-Index76
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i10 Index183
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Citation Counts34,827
Rankings
Bioprocess Engineering | Biotechnology | Environmental Engineerin
H-Index Metrics
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H-Index74
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i10 Index192
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Citation Counts19,652
Rankings
Microplastics | Pollutants | PFAS | Nanoparticles | Remediatio
H-Index Metrics
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H-Index72
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i10 Index194
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Citation Counts22,578
Rankings
Integrated land use modelling | climate change | global change | applied mathematical programming | bio-physical process modellin
H-Index Metrics
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H-Index68
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i10 Index167
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Citation Counts23,449
Rankings
Environmental Engineering | Environmental Geoscience | Circular Economy | Biochar | Climate Chang
H-Index Metrics
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H-Index59
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i10 Index116
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Citation Counts9,829
Rankings
Rankings
Membrane Processes | Water Reuse | Water Treatment | Wastewater Treatmen
H-Index Metrics
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H-Index57
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i10 Index204
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Citation Counts11,562
Rankings
Environmental science | Analytical chemistr
H-Index Metrics
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H-Index57
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i10 Index106
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Citation Counts11,596
Rankings
Grassland management | Climate change | Agriculture | Biogeochemical cycle | Land-use chang
H-Index Metrics
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H-Index56
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i10 Index122
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Citation Counts12,734
Rankings
climate change | sustainable energy | energy efficiency | modelin
H-Index Metrics
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H-Index56
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i10 Index118
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Citation Counts20,675
Rankings
Rankings
remote sensing | geomatics/GIS | UAV | environmental sciences | sustainable constructio
H-Index Metrics
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H-Index51
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i10 Index177
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Citation Counts8,978
Rankings
Energy Demand | Integrated Assessment | Macro Energy Systems | Scenarios | Energy and Developmen
H-Index Metrics
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H-Index50
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i10 Index100
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Citation Counts15,767
Rankings
Air Pollution | persistent organic pollutant
H-Index Metrics
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H-Index50
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i10 Index82
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Citation Counts7,510
Rankings
Rankings
Social-ecological systems | Conservation biology | Amphibians | Wood-pastures | Transdisciplinar
H-Index Metrics
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H-Index49
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i10 Index109
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Citation Counts8,167
Rankings
Membrane Processes | water and wastewater recovery | biotechnolog
H-Index Metrics
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H-Index49
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i10 Index117
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Citation Counts7,697
Rankings
çevre kimyası | kimyasal arıtma prosesleri | ileri oksidasyon prosesleri | ozonlama | su ve atıksu arıtım
H-Index Metrics
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H-Index49
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i10 Index119
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Citation Counts9,421
Rankings
membrane processes | water/wastewater treatment | reuse | clean production | DBP
H-Index Metrics
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H-Index49
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i10 Index74
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Citation Counts8,085
Rankings
Environmental sciences | Protistology | Evolutionary Biolog
H-Index Metrics
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H-Index48
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i10 Index104
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Citation Counts7,168
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