Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers CitationNatural Sciences / Geography Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
135,472
54,537
0.403
* 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
77,492
32,243
0.416
* 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
73,131
55,305
0.756
* 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
72,222
42,383
0.587
* 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
69,275
19,776
0.285
* 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
62,978
23,382
0.371
* 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
60,941
13,386
0.220
* Total Citation Counts Rankings
Ranking Based On Selection :8
Remote Sensing
Environment
GIS
Land cover
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,130
22,335
0.384
* Total Citation Counts Rankings
Ranking Based On Selection :9
Geography
Global health
Small-area studies
Non-communicable disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,429
40,988
0.726
* Total Citation Counts Rankings
Ranking Based On Selection :10
geography
political-economy
political-ecology
cities
planning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,233
21,099
0.389
* Total Citation Counts Rankings
Ranking Based On Selection :11
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,155
38,981
0.733
* Total Citation Counts Rankings
Ranking Based On Selection :12
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,042
21,595
0.450
* Total Citation Counts Rankings
Ranking Based On Selection :13
geography
sustainability
land change
anthropology
archaeology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,003
15,027
0.320
* 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
46,707
22,492
0.482
* 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
45,953
25,144
0.547
* Total Citation Counts Rankings
Ranking Based On Selection :16
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,638
12,937
0.283
* Total Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,685
28,676
0.642
* 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
44,517
21,346
0.480
* 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
43,721
24,214
0.554
* Total Citation Counts Rankings
Ranking Based On Selection :20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,732
23,292
0.545
* 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
42,587
14,605
0.343
* 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
39,093
12,910
0.330
* 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
36,958
10,472
0.283
* Total Citation Counts Rankings
Ranking Based On Selection :24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,790
17,636
0.479
* 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
36,498
13,858
0.380
* Total Citation Counts Rankings
Rankings
1,657
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
135,472
54,537
0.403
Sustainability
resilience
ecological economics
human geography
climate change
* Total Citation Counts Rankings
Rankings
4,727
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
77,492
32,243
0.416
geography
geomorphology
soil erosion
soil
soil conservation
* Total Citation Counts Rankings
Rankings
5,248
209
2
Ranking Based On Selection: 3
Biswajeet Pradhan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,131
55,305
0.756
Geographic Information Systems
Geographic Information Science
Geoinformatics
Spatial Data Mining
Natural Hazards
* Total Citation Counts Rankings
Rankings
5,337
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
72,222
42,383
0.587
Geography
Remote Sensing
Land Cover
Urban Systems
Global Sustainability
* Total Citation Counts Rankings
Rankings
5,695
2,715
13
Ranking Based On Selection: 5
Veblen TT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,275
19,776
0.285
Forest ecology
fire ecology
biogeography
disturbance ecology
geography
* Total Citation Counts Rankings
Rankings
6,645
254
29
Ranking Based On Selection: 6
Oke Tr
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,978
23,382
0.371
urban meteorology
heat island
boundary layer climates
* Total Citation Counts Rankings
Rankings
7,017
609
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
60,941
13,386
0.220
globalization
world cities
political geography
cities
* Total Citation Counts Rankings
Rankings
7,562
3,616
29
Ranking Based On Selection: 8
John Townshend
University of Maryland
College Park, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,130
22,335
0.384
Remote Sensing
Environment
GIS
Land cover
* Total Citation Counts Rankings
Rankings
7,926
689
58
Ranking Based On Selection: 9
Frédéric B Piel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,429
40,988
0.726
Geography
Global health
Small-area studies
Non-communicable disease
* Total Citation Counts Rankings
Rankings
8,496
742
34
Ranking Based On Selection: 10
Erik Swyngedouw
University of Manchester
Manchester, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,233
21,099
0.389
geography
political-economy
political-ecology
cities
planning
* Total Citation Counts Rankings
Rankings
8,777
12
9
Ranking Based On Selection: 11
Leho Tedersoo
University of Tartu
Tartu, Estonia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,155
38,981
0.733
Mycorrhiza
Biogeography
Molecular Ecology
Multitrophic interactions
* Total Citation Counts Rankings
Rankings
10,275
406
63
Ranking Based On Selection: 12
Jing M Chen
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,042
21,595
0.450
Remote Sensing
Terrestrial Carbon Cycle
Hydrology
* Total Citation Counts Rankings
Rankings
10,634
5,081
40
Ranking Based On Selection: 13
Bl Turner II
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,003
15,027
0.320
geography
sustainability
land change
anthropology
archaeology
* Total Citation Counts Rankings
Rankings
10,736
5,124
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
46,707
22,492
0.482
Ecology
Landscape
Global Change
Land Use
Urban
* Total Citation Counts Rankings
Rankings
11,009
325
2
Ranking Based On Selection: 15
Wenjiao Xiao
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,953
25,144
0.547
Structural Geology
Tectonics
Accretionary Complex
Central Asian Orogenic Belt
* Total Citation Counts Rankings
Rankings
11,135
971
16
Ranking Based On Selection: 16
Gill Valentine
University of Sheffield
Sheffield, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,638
12,937
0.283
* Total Citation Counts Rankings
Rankings
11,490
5,481
93
Ranking Based On Selection: 17
Karen C Seto
Yale University
New Haven, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,685
28,676
0.642
* Total Citation Counts Rankings
Rankings
11,572
93
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
44,517
21,346
0.480
Environmental health
human mobility
healthy cities
social justice
GIScience
* Total Citation Counts Rankings
Rankings
11,913
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
43,721
24,214
0.554
Climate change
global environmental change
transformation
human security
vulnerability
* Total Citation Counts Rankings
Rankings
12,370
5,900
42
Ranking Based On Selection: 20
Shunlin Liang
University of Maryland
College Park, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,732
23,292
0.545
* Total Citation Counts Rankings
Rankings
12,443
5,943
38
Ranking Based On Selection: 21
Emilio Moran
Michigan State University
East Lansing, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,587
14,605
0.343
* Total Citation Counts Rankings
Rankings
14,294
255
27
Ranking Based On Selection: 22
Claude Raffestin
Université de Geneve
Geneva, Switzerland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,093
12,910
0.330
Geography
Ecologie humaine
Territory
Political geography
* Total Citation Counts Rankings
Rankings
15,611
7,386
164
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
36,958
10,472
0.283
Geopolitics
territorial politics
international political economy
territory
Italy
* Total Citation Counts Rankings
Rankings
15,737
1,369
16
Ranking Based On Selection: 24
Harriet Bulkeley
Durham University
Durham, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,790
17,636
0.479
* Total Citation Counts Rankings
Rankings
15,958
1,389
186
Ranking Based On Selection: 25
Robert J Whittaker
University of Oxford
Oxford, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,498
13,858
0.380
Island Biogeography
Conservation Biogeography
Ecological Biogeography