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 Jan 08, 2026, 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 (1.131.927) 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
Rankings
Environmental economics and resources | Climate Change
H-Index Metrics
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H-Index72
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i10 Index273
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Citation Counts43,627
Rankings
Climate change policy | Land use | Air pollution | Carbon and nitrogen cycles | green house gas inventorie
H-Index Metrics
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H-Index60
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i10 Index104
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Citation Counts21,243
Rankings
Rankings
Functional ecology | soil ecology | soil biodiversity | biogeochemistry | Soil respiratio
H-Index Metrics
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H-Index40
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i10 Index72
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Citation Counts8,431
Rankings
Climate Change | Economics of Climate Change | Environmental Economics | Ecological Economis | Input-Oupu
H-Index Metrics
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H-Index39
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i10 Index71
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Citation Counts7,201
Rankings
Rankings
Environmental impact analysis & Software development | Environmental fate | Uncertainty | Energy system analysis | Carbon emission
H-Index Metrics
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H-Index37
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i10 Index65
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Citation Counts7,748
Rankings
Rankings
Rankings
environmental economics | energy economics | climate change | energy transition | low-carbon pathway
H-Index Metrics
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H-Index22
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i10 Index29
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Citation Counts1,828
Rankings
Rankings
Rankings
Geography | Political Ecology | Ecosystem Services | Governance | Global chang
H-Index Metrics
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H-Index13
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i10 Index13
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Citation Counts803
Rankings
Environmental economics and resources - Climate Change
H-Index Metrics
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H-Index13
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i10 Index13
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Citation Counts525
Rankings
Rankings
knowledge co-production | water governance | relational-procesual approache
H-Index Metrics
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H-Index12
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i10 Index13
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Citation Counts652
Rankings
Environmenal modelling | land use | food security | agroecosystems | climate chang
H-Index Metrics
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H-Index11
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i10 Index11
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Citation Counts401
Rankings
Economic valuation | consumers’ decision-making | policy guidance | applied econometrics | energy economic
H-Index Metrics
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H-Index11
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i10 Index11
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Citation Counts583
Rankings
Rankings
applied ontology | sustainability | climate change | human factors | business process modellin
H-Index Metrics
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H-Index10
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i10 Index11
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Citation Counts262
Rankings
Urban ecology | Landscape Ecology | Ecosystem services | Environmental Justic
H-Index Metrics
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H-Index10
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i10 Index10
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Citation Counts405
Rankings
climate change adaptation | nature-based solutions | ecosystem services | nature´s contributions to peopl
H-Index Metrics
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H-Index9
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i10 Index9
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Citation Counts351
Rankings
climate justice | climate adaptation | urban sustainability | intersectionality | environmental politic
H-Index Metrics
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H-Index8
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i10 Index8
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Citation Counts901
Rankings
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