University, Subject, Country, Region, World
International Institute for Applied Systems Analysis 130 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 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 6 years. As of Feb 02, 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 (870.053) 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].
* Total H IndexRankings
Ranking Based On Selection: 51
systems analysis
sustainability transition
ecosystem
resilience
soft systems modelling
Metrics
H-Index
i10 Index
Citation Counts
26
35
3,172
* Total H IndexRankings
Ranking Based On Selection: 52
water-energy-land nexus
science to policy
sustainable consumption
agricultural water management
biodiversity risk assessment
Metrics
H-Index
i10 Index
Citation Counts
25
40
3,473
* Total H IndexRankings
Ranking Based On Selection: 53
Climate risk management
Climate economics
Loss and Damage
Just Transitions
Metrics
H-Index
i10 Index
Citation Counts
24
36
2,532
* Total H IndexRankings
Ranking Based On Selection: 54
Water resources management
Environmental and resource economics
Metrics
H-Index
i10 Index
Citation Counts
24
31
2,904
* Total H IndexRankings
Ranking Based On Selection: 55
Metrics
H-Index
i10 Index
Citation Counts
24
56
2,180
* Total H IndexRankings
Ranking Based On Selection: 56
Forestry
Metrics
H-Index
i10 Index
Citation Counts
24
37
2,220
* Total H IndexRankings
Ranking Based On Selection: 57
geoinformatics
land cover
web applications
web mapping
crowd-sourcing
Metrics
H-Index
i10 Index
Citation Counts
23
34
3,458
* Total H IndexRankings
Ranking Based On Selection: 58
Economic Geography
Regional Economics
Environmental Economics
Spatial Econometrics
Spatial Statistics
Metrics
H-Index
i10 Index
Citation Counts
22
36
3,939
* Total H IndexRankings
Ranking Based On Selection: 59
Metrics
H-Index
i10 Index
Citation Counts
22
30
3,409
* Total H IndexRankings
Ranking Based On Selection: 60
energy demand
climate change mitigation
behavior change
agent-based modelling
cities
Metrics
H-Index
i10 Index
Citation Counts
21
26
23,825
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* Total H IndexRankings
Ranking Based On Selection: 61
optimal control
economic growth
networks
Metrics
H-Index
i10 Index
Citation Counts
21
38
2,054
* Total H IndexRankings
Ranking Based On Selection: 62
Agricultural Sciences
Statistical Analysis
Citizen Science
Natural disasters
Metrics
H-Index
i10 Index
Citation Counts
21
29
1,956
* Total H IndexRankings
Ranking Based On Selection: 63
Forestry
Ecosystem services
Metrics
H-Index
i10 Index
Citation Counts
21
39
1,313
* Total H IndexRankings
Ranking Based On Selection: 64
Macroecology
Conservation Biology
Systematic Conservation planning
Landscape ecology
Nexus
Metrics
H-Index
i10 Index
Citation Counts
20
30
4,201
* Total H IndexRankings
Ranking Based On Selection: 65
Economics
Human Geography
Disasters
Climate Change Adaptation
Metrics
H-Index
i10 Index
Citation Counts
20
28
2,237
* Total H IndexRankings
Ranking Based On Selection: 66
Energy Economics
Metrics
H-Index
i10 Index
Citation Counts
20
43
3,396
* Total H IndexRankings
Ranking Based On Selection: 67
policy analysis
deep uncertainty
system dynamics
climate change mitigation
sustainability
Metrics
H-Index
i10 Index
Citation Counts
19
23
1,399
* Total H IndexRankings
Ranking Based On Selection: 68
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,445
* Total H IndexRankings
Ranking Based On Selection: 69
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,573
* Total H IndexRankings
Ranking Based On Selection: 70
climate policy
systems analysis
risk analysis
governance and decision making
Metrics
H-Index
i10 Index
Citation Counts
18
21
1,235
* Total H IndexRankings
Ranking Based On Selection: 71
Metrics
H-Index
i10 Index
Citation Counts
18
28
1,865
* Total H IndexRankings
Ranking Based On Selection: 72
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,660
* Total H IndexRankings
Ranking Based On Selection: 73
decision science
collective action
uncertainty
sustainable development
Metrics
H-Index
i10 Index
Citation Counts
17
19
1,055
* Total H IndexRankings
Ranking Based On Selection: 74
Energy IPE
Metrics
H-Index
i10 Index
Citation Counts
16
21
1,549
* Total H IndexRankings
Ranking Based On Selection: 75
Demography
projection
migration
aging
population
Metrics
H-Index
i10 Index
Citation Counts
16
23
1,012
Wei Liu
Metrics
H-Index
i10-Index
Citation Counts
26
35
3,172
systems analysis
sustainability transition
ecosystem
resilience
soft systems modelling
Barbara Willaarts
Metrics
H-Index
i10-Index
Citation Counts
25
40
3,473
water-energy-land nexus
science to policy
sustainable consumption
agricultural water management
biodiversity risk assessment
Thomas Schinko
Metrics
H-Index
i10-Index
Citation Counts
24
36
2,532
Climate risk management
Climate economics
Loss and Damage
Just Transitions
Taher Kahil
Metrics
H-Index
i10-Index
Citation Counts
24
31
2,904
Water resources management
Environmental and resource economics
Tieju Ma
Metrics
H-Index
i10-Index
Citation Counts
24
56
2,180
Fulvio Di Fulvio
Metrics
H-Index
i10-Index
Citation Counts
24
37
2,220
Christoph Perger
Metrics
H-Index
i10-Index
Citation Counts
23
34
3,458
geoinformatics
land cover
web applications
web mapping
crowd-sourcing
Tamás Krisztin
Metrics
H-Index
i10-Index
Citation Counts
22
36
3,939
Economic Geography
Regional Economics
Environmental Economics
Spatial Econometrics
Spatial Statistics
Benigna Boza-Kiss
Metrics
H-Index
i10-Index
Citation Counts
22
30
3,409
Leila Niamir
Metrics
H-Index
i10-Index
Citation Counts
21
26
23,825
energy demand
climate change mitigation
behavior change
agent-based modelling
cities
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Elena Rovenskaya
Metrics
H-Index
i10-Index
Citation Counts
21
38
2,054
optimal control
economic growth
networks
Juan Carlos Laso Bayas
Metrics
H-Index
i10-Index
Citation Counts
21
29
1,956
Agricultural Sciences
Statistical Analysis
Citizen Science
Natural disasters
Moonil Kim
Metrics
H-Index
i10-Index
Citation Counts
21
39
1,313
Martin Jung
Metrics
H-Index
i10-Index
Citation Counts
20
30
4,201
Macroecology
Conservation Biology
Systematic Conservation planning
Landscape ecology
Nexus
Adriana Keating
Metrics
H-Index
i10-Index
Citation Counts
20
28
2,237
Economics
Human Geography
Disasters
Climate Change Adaptation
Sebastian Busch
Metrics
H-Index
i10-Index
Citation Counts
20
43
3,396
Sibel Eker
Metrics
H-Index
i10-Index
Citation Counts
19
23
1,399
policy analysis
deep uncertainty
system dynamics
climate change mitigation
sustainability
Olga Danylo
Metrics
H-Index
i10-Index
Citation Counts
19
27
1,445
Stephan A. Pietsch
Metrics
H-Index
i10-Index
Citation Counts
19
25
1,573
Susanne Hanger-Kopp
Metrics
H-Index
i10-Index
Citation Counts
18
21
1,235
climate policy
systems analysis
risk analysis
governance and decision making
Junko Mochizuki
Metrics
H-Index
i10-Index
Citation Counts
18
28
1,865
Sebastian Poledna
Metrics
H-Index
i10-Index
Citation Counts
17
21
1,660
Matthias Wildemeersch
Metrics
H-Index
i10-Index
Citation Counts
17
19
1,055
decision science
collective action
uncertainty
sustainable development
Elina Brutschin
Metrics
H-Index
i10-Index
Citation Counts
16
21
1,549
Guillaume Marois
Metrics
H-Index
i10-Index
Citation Counts
16
23
1,012
Demography
projection
migration
aging
population