World Scientist and University Rankings 2025
World Natural Sciences 5.633 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 01, 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: 1
geography
geomorphology
soil erosion
soil
soil conservation
Metrics
H-Index
i10 Index
Citation Counts
153
609
80,345
* Total H IndexRankings
Ranking Based On Selection: 2
Geographic Information Systems
Geographic Information Science
Geoinformatics
Spatial Data Mining
Natural Hazards
Metrics
H-Index
i10 Index
Citation Counts
140
715
78,735
* Total H IndexRankings
Ranking Based On Selection: 3
Geography
Remote Sensing
Land Cover
Urban Systems
Global Sustainability
Metrics
H-Index
i10 Index
Citation Counts
132
535
77,258
* Total H IndexRankings
Ranking Based On Selection: 4
Sustainability
resilience
ecological economics
human geography
climate change
Metrics
H-Index
i10 Index
Citation Counts
120
303
141,030
* Total H IndexRankings
Ranking Based On Selection: 5
Forest ecology
fire ecology
biogeography
disturbance ecology
geography
Metrics
H-Index
i10 Index
Citation Counts
115
319
71,256
* Total H IndexRankings
Ranking Based On Selection: 6
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
Metrics
H-Index
i10 Index
Citation Counts
111
456
50,536
* Total H IndexRankings
Ranking Based On Selection: 7
globalization
world cities
political geography
cities
Metrics
H-Index
i10 Index
Citation Counts
109
653
62,324
* Total H IndexRankings
Ranking Based On Selection: 8
Ecology
Landscape
Global Change
Land Use
Urban
Metrics
H-Index
i10 Index
Citation Counts
106
411
49,256
* Total H IndexRankings
Ranking Based On Selection: 9
Metrics
H-Index
i10 Index
Citation Counts
105
481
45,310
* Total H IndexRankings
Ranking Based On Selection: 10
Structural Geology
Tectonics
Accretionary Complex
Central Asian Orogenic Belt
Metrics
H-Index
i10 Index
Citation Counts
101
435
48,467
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* Total H IndexRankings
Ranking Based On Selection: 11
Metrics
H-Index
i10 Index
Citation Counts
100
216
46,716
* Total H IndexRankings
Ranking Based On Selection: 12
physical geography
soils
ecology
biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
100
252
32,515
* Total H IndexRankings
Ranking Based On Selection: 13
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
Metrics
H-Index
i10 Index
Citation Counts
98
240
57,554
* Total H IndexRankings
Ranking Based On Selection: 14
Glaciology
High Mountains
Climate Change
Geomorphology
Metrics
H-Index
i10 Index
Citation Counts
98
296
33,558
* Total H IndexRankings
Ranking Based On Selection: 15
physical geography
climatology
paleoclimatology
paleoecology
Metrics
H-Index
i10 Index
Citation Counts
97
195
35,883
* Total H IndexRankings
Ranking Based On Selection: 16
Remote sensing
Metrics
H-Index
i10 Index
Citation Counts
96
307
37,462
* Total H IndexRankings
Ranking Based On Selection: 17
Environmental health
human mobility
healthy cities
social justice
GIScience
Metrics
H-Index
i10 Index
Citation Counts
95
335
46,273
* Total H IndexRankings
Ranking Based On Selection: 18
Dendrochronology
Climate
Climate Change
Paleoclimate
Geography
Metrics
H-Index
i10 Index
Citation Counts
95
241
31,390
* Total H IndexRankings
Ranking Based On Selection: 19
Metrics
H-Index
i10 Index
Citation Counts
92
163
47,718
* Total H IndexRankings
Ranking Based On Selection: 20
Remote Sensing
Environment
GIS
Land cover
Metrics
H-Index
i10 Index
Citation Counts
91
189
60,031
* Total H IndexRankings
Ranking Based On Selection: 21
geography
political-economy
political-ecology
cities
planning
Metrics
H-Index
i10 Index
Citation Counts
88
217
56,059
* Total H IndexRankings
Ranking Based On Selection: 22
Migration
Rural Geography
the Mediterranean
Islands
Ageing
Metrics
H-Index
i10 Index
Citation Counts
88
309
35,650
* Total H IndexRankings
Ranking Based On Selection: 23
migration
transnationalism
gender
Asia
Metrics
H-Index
i10 Index
Citation Counts
87
308
26,096
* Total H IndexRankings
Ranking Based On Selection: 24
polar weather
polar climate
Metrics
H-Index
i10 Index
Citation Counts
87
250
27,210
* Total H IndexRankings
Ranking Based On Selection: 25
governance
extractive industry
development geography
socio-environmental conflicts
political ecology
Metrics
H-Index
i10 Index
Citation Counts
86
242
32,429
Jean Poesen
Catholic University of Leuven
Leuven, Belgium
Metrics
H-Index
i10-Index
Citation Counts
153
609
80,345
geography
geomorphology
soil erosion
soil
soil conservation
Biswajeet Pradhan
Metrics
H-Index
i10-Index
Citation Counts
140
715
78,735
Geographic Information Systems
Geographic Information Science
Geoinformatics
Spatial Data Mining
Natural Hazards
Peng Gong
University of Hong Kong
Pokfulam, Hong Kong
Metrics
H-Index
i10-Index
Citation Counts
132
535
77,258
Geography
Remote Sensing
Land Cover
Urban Systems
Global Sustainability
Neil Adger
University of Exeter
Exeter, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
120
303
141,030
Sustainability
resilience
ecological economics
human geography
climate change
Veblen TT
Metrics
H-Index
i10-Index
Citation Counts
115
319
71,256
Forest ecology
fire ecology
biogeography
disturbance ecology
geography
Jing M Chen
University of Toronto
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
111
456
50,536
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
Peter J Taylor
Northumbria University
Newcastle upon Tyne, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
109
653
62,324
globalization
world cities
political geography
cities
Jiquan Chen
Michigan State University
East Lansing, United States
Metrics
H-Index
i10-Index
Citation Counts
106
411
49,256
Ecology
Landscape
Global Change
Land Use
Urban
Shunlin Liang
University of Maryland
College Park, United States
Metrics
H-Index
i10-Index
Citation Counts
105
481
45,310
Wenjiao Xiao
Metrics
H-Index
i10-Index
Citation Counts
101
435
48,467
Structural Geology
Tectonics
Accretionary Complex
Central Asian Orogenic Belt
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Gill Valentine
University of Sheffield
Sheffield, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
100
216
46,716
Tim Moore
McGill University
Montréal, Canada
Metrics
H-Index
i10-Index
Citation Counts
100
252
32,515
physical geography
soils
ecology
biogeochemistry
Leho Tedersoo
University of Tartu
Tartu, Estonia
Metrics
H-Index
i10-Index
Citation Counts
98
240
57,554
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
Wilfried Haeberli
Universität Zürich
Zurich, Switzerland
Metrics
H-Index
i10-Index
Citation Counts
98
296
33,558
Glaciology
High Mountains
Climate Change
Geomorphology
Patrick J Bartlein
University of Oregon
Eugene, United States
Metrics
H-Index
i10-Index
Citation Counts
97
195
35,883
physical geography
climatology
paleoclimatology
paleoecology
Dar A Roberts
University of California Santa Barbara
Santa Barbara, United States
Metrics
H-Index
i10-Index
Citation Counts
96
307
37,462
Mei Po Kwan
Metrics
H-Index
i10-Index
Citation Counts
95
335
46,273
Environmental health
human mobility
healthy cities
social justice
GIScience
Jan Esper
Helmholtz Institut Mainz
Mainz, Germany
Metrics
H-Index
i10-Index
Citation Counts
95
241
31,390
Dendrochronology
Climate
Climate Change
Paleoclimate
Geography
Karen C Seto
Yale University
New Haven, United States
Metrics
H-Index
i10-Index
Citation Counts
92
163
47,718
John Townshend
University of Maryland
College Park, United States
Metrics
H-Index
i10-Index
Citation Counts
91
189
60,031
Remote Sensing
Environment
GIS
Land cover
Erik Swyngedouw
University of Manchester
Manchester, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
88
217
56,059
geography
political-economy
political-ecology
cities
planning
Russell King
University of Sussex
Brighton, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
88
309
35,650
Migration
Rural Geography
the Mediterranean
Islands
Ageing
Brenda Yeoh
National University of Singapore
Queenstown, Singapore
Metrics
H-Index
i10-Index
Citation Counts
87
308
26,096
David Bromwich
Ohio State University
Columbus, United States
Metrics
H-Index
i10-Index
Citation Counts
87
250
27,210
Anthony Bebbington
Clark University
Worcester, United States
Metrics
H-Index
i10-Index
Citation Counts
86
242
32,429
governance
extractive industry
development geography
socio-environmental conflicts
political ecology