Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers CitationNatural Sciences / Geography Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Sustainability
resilience
ecological economics
human geography
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138,555
57,051
0.412
* Total Citation Counts Rankings
Ranking Based On Selection :2
geography
geomorphology
soil erosion
soil
soil conservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,022
33,679
0.426
* Total Citation Counts Rankings
Ranking Based On Selection :3
Geographic Information Systems
Geographic Information Science
Geoinformatics
Spatial Data Mining
Natural Hazards
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,207
58,327
0.765
* Total Citation Counts Rankings
Ranking Based On Selection :4
Geography
Remote Sensing
Land Cover
Urban Systems
Global Sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,889
44,942
0.600
* Total Citation Counts Rankings
Ranking Based On Selection :5
Forest ecology
fire ecology
biogeography
disturbance ecology
geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,374
20,668
0.294
* Total Citation Counts Rankings
Ranking Based On Selection :6
urban meteorology
heat island
boundary layer climates
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,133
24,467
0.382
* Total Citation Counts Rankings
Ranking Based On Selection :7
globalization
world cities
political geography
cities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,744
14,043
0.227
* Total Citation Counts Rankings
Ranking Based On Selection :8
Geography
Global health
Small-area studies
Non-communicable disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,415
43,726
0.736
* Total Citation Counts Rankings
Ranking Based On Selection :9
Remote Sensing
Environment
GIS
Land cover
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,129
23,249
0.393
* Total Citation Counts Rankings
Ranking Based On Selection :10
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,606
41,379
0.744
* Total Citation Counts Rankings
Ranking Based On Selection :11
geography
political-economy
political-ecology
cities
planning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,154
21,866
0.396
* Total Citation Counts Rankings
Ranking Based On Selection :12
geography
sustainability
land change
anthropology
archaeology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,145
16,666
0.332
* Total Citation Counts Rankings
Ranking Based On Selection :13
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,247
22,737
0.462
* Total Citation Counts Rankings
Ranking Based On Selection :14
Ecology
Landscape
Global Change
Land Use
Urban
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,076
23,789
0.495
* Total Citation Counts Rankings
Ranking Based On Selection :15
Structural Geology
Tectonics
Accretionary Complex
Central Asian Orogenic Belt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,960
26,128
0.556
* Total Citation Counts Rankings
Ranking Based On Selection :16
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,392
30,295
0.653
* Total Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,220
13,364
0.289
* Total Citation Counts Rankings
Ranking Based On Selection :18
Environmental health
human mobility
healthy cities
social justice
GIScience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,058
22,786
0.495
* Total Citation Counts Rankings
Ranking Based On Selection :19
Climate change
global environmental change
transformation
human security
vulnerability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,928
25,269
0.562
* Total Citation Counts Rankings
Ranking Based On Selection :20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,185
24,695
0.559
* Total Citation Counts Rankings
Ranking Based On Selection :21
Land use and land cover change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,296
15,230
0.352
* Total Citation Counts Rankings
Ranking Based On Selection :22
Geography
Ecologie humaine
Territory
Political geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,567
13,337
0.337
* Total Citation Counts Rankings
Ranking Based On Selection :23
Geopolitics
territorial politics
international political economy
territory
Italy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,505
10,904
0.291
* Total Citation Counts Rankings
Ranking Based On Selection :24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,389
18,147
0.485
* Total Citation Counts Rankings
Ranking Based On Selection :25
Island Biogeography
Conservation Biogeography
Ecological Biogeography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,166
14,476
0.389
* Total Citation Counts Rankings
Rankings
1,660
133
4
Ranking Based On Selection: 1
Neil Adger
University of Exeter
Exeter, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138,555
57,051
0.412
Sustainability
resilience
ecological economics
human geography
climate change
* Total Citation Counts Rankings
Rankings
4,743
31
5
Ranking Based On Selection: 2
Jean Poesen
Catholic University of Leuven
Leuven, Belgium
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,022
33,679
0.426
geography
geomorphology
soil erosion
soil
soil conservation
* Total Citation Counts Rankings
Rankings
5,070
205
2
Ranking Based On Selection: 3
Biswajeet Pradhan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,207
58,327
0.765
Geographic Information Systems
Geographic Information Science
Geoinformatics
Spatial Data Mining
Natural Hazards
* Total Citation Counts Rankings
Rankings
5,223
30
9
Ranking Based On Selection: 4
Peng Gong
University of Hong Kong
Pok Fu Lam, Hong Kong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,889
44,942
0.600
Geography
Remote Sensing
Land Cover
Urban Systems
Global Sustainability
* Total Citation Counts Rankings
Rankings
5,753
2,726
12
Ranking Based On Selection: 5
Veblen TT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,374
20,668
0.294
Forest ecology
fire ecology
biogeography
disturbance ecology
geography
* Total Citation Counts Rankings
Rankings
6,698
255
30
Ranking Based On Selection: 6
Oke Tr
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,133
24,467
0.382
urban meteorology
heat island
boundary layer climates
* Total Citation Counts Rankings
Rankings
7,144
620
2
Ranking Based On Selection: 7
Peter J Taylor
Northumbria University
Newcastle upon Tyne, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,744
14,043
0.227
globalization
world cities
political geography
cities
* Total Citation Counts Rankings
Rankings
7,576
661
56
Ranking Based On Selection: 8
Frédéric B Piel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,415
43,726
0.736
Geography
Global health
Small-area studies
Non-communicable disease
* Total Citation Counts Rankings
Rankings
7,636
3,624
29
Ranking Based On Selection: 9
John Townshend
University of Maryland
College Park, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,129
23,249
0.393
Remote Sensing
Environment
GIS
Land cover
* Total Citation Counts Rankings
Rankings
8,452
12
9
Ranking Based On Selection: 10
Leho Tedersoo
University of Tartu
Tartu, Estonia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,606
41,379
0.744
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
* Total Citation Counts Rankings
Rankings
8,575
747
34
Ranking Based On Selection: 11
Erik Swyngedouw
University of Manchester
Manchester, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,154
21,866
0.396
geography
political-economy
political-ecology
cities
planning
* Total Citation Counts Rankings
Rankings
9,977
4,753
39
Ranking Based On Selection: 12
Bl Turner II
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,145
16,666
0.332
geography
sustainability
land change
anthropology
archaeology
* Total Citation Counts Rankings
Rankings
10,256
402
62
Ranking Based On Selection: 13
Jing M Chen
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,247
22,737
0.462
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
* Total Citation Counts Rankings
Rankings
10,636
5,061
31
Ranking Based On Selection: 14
Jiquan Chen
Michigan State University
East Lansing, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,076
23,789
0.495
Ecology
Landscape
Global Change
Land Use
Urban
* Total Citation Counts Rankings
Rankings
11,026
341
2
Ranking Based On Selection: 15
Wenjiao Xiao
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,960
26,128
0.556
Structural Geology
Tectonics
Accretionary Complex
Central Asian Orogenic Belt
* Total Citation Counts Rankings
Rankings
11,228
5,323
90
Ranking Based On Selection: 16
Karen C Seto
Yale University
New Haven, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,392
30,295
0.653
* Total Citation Counts Rankings
Rankings
11,292
988
16
Ranking Based On Selection: 17
Gill Valentine
University of Sheffield
Sheffield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,220
13,364
0.289
* Total Citation Counts Rankings
Rankings
11,343
91
29
Ranking Based On Selection: 18
Mei Po Kwan
Chinese University of Hong Kong
Central Ave, Hong Kong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,058
22,786
0.495
Environmental health
human mobility
healthy cities
social justice
GIScience
* Total Citation Counts Rankings
Rankings
11,831
44
18
Ranking Based On Selection: 19
Karen O Brien
University of Oslo
Oslo, Norway
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,928
25,269
0.562
Climate change
global environmental change
transformation
human security
vulnerability
* Total Citation Counts Rankings
Rankings
12,152
5,776
41
Ranking Based On Selection: 20
Shunlin Liang
University of Maryland
College Park, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,185
24,695
0.559
* Total Citation Counts Rankings
Rankings
12,586
5,970
39
Ranking Based On Selection: 21
Emilio Moran
Michigan State University
East Lansing, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,296
15,230
0.352
* Total Citation Counts Rankings
Rankings
14,535
261
28
Ranking Based On Selection: 22
Claude Raffestin
Université de Geneve
Geneva, Switzerland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,567
13,337
0.337
Geography
Ecologie humaine
Territory
Political geography
* Total Citation Counts Rankings
Rankings
15,823
7,447
163
Ranking Based On Selection: 23
J Agnew
University of California Los Angeles
Los Angeles, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,505
10,904
0.291
Geopolitics
territorial politics
international political economy
territory
Italy
* Total Citation Counts Rankings
Rankings
15,907
1,377
16
Ranking Based On Selection: 24
Harriet Bulkeley
Durham University
Durham, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,389
18,147
0.485
* Total Citation Counts Rankings
Rankings
16,065
1,400
187
Ranking Based On Selection: 25
Robert J Whittaker
University of Oxford
Oxford, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,166
14,476
0.389
Island Biogeography
Conservation Biogeography
Ecological Biogeography