World Scientist and University Rankings 2025
Hong Kong Natural Sciences / Geography 31 Scientists Subject Rankings - 2025
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 6 years. As of Jun 18, 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 (0) 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 Index Rankings
Rankings
2,919
World Rank
26
Country Rank
5
University
Ranking Based On Selection:
1
Natural Sciences / Geography
Geography | Remote Sensing | Land Cover | Urban Systems | Global Sustainabilit
Geography | Remote Sensing | Land Cover | Urban Systems | Global Sustainabilit
H-Index Metrics
-
H-Index136
-
i10 Index559
-
Citation Counts81,943
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* Total H Index Rankings
Rankings
10,388
World Rank
113
Country Rank
32
University
Ranking Based On Selection:
2
Natural Sciences / Geography
Environmental health | human mobility | healthy cities | social justice | GIScienc
Environmental health | human mobility | healthy cities | social justice | GIScienc
H-Index Metrics
-
H-Index98
-
i10 Index353
-
Citation Counts47,298
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* Total H Index Rankings
Rankings
70,163
World Rank
662
Country Rank
147
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
83,056
World Rank
746
Country Rank
175
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
87,476
World Rank
781
Country Rank
184
University
Ranking Based On Selection:
5
Natural Sciences / Geography
Migration and Urbanization | Urban and Regional Development | Regional Governance | Urban Competitiveness | Chin
Migration and Urbanization | Urban and Regional Development | Regional Governance | Urban Competitiveness | Chin
H-Index Metrics
-
H-Index50
-
i10 Index145
-
Citation Counts7,832
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* Total H Index Rankings
Rankings
110,078
World Rank
944
Country Rank
226
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
131,296
World Rank
1,119
Country Rank
292
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
160,244
World Rank
1,292
Country Rank
35
University
Ranking Based On Selection:
8
Natural Sciences / Geography
environmental politics | just transition | political geography | environmental governance | Chin
environmental politics | just transition | political geography | environmental governance | Chin
H-Index Metrics
-
H-Index38
-
i10 Index86
-
Citation Counts4,938
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* Total H Index Rankings
Rankings
179,095
World Rank
1,407
Country Rank
304
University
Ranking Based On Selection:
9
Natural Sciences / Geography
Biogeochemistry | Carbon cycling | Ecosystem ecology | Greenhouse gas | Wetland
Biogeochemistry | Carbon cycling | Ecosystem ecology | Greenhouse gas | Wetland
H-Index Metrics
-
H-Index36
-
i10 Index80
-
Citation Counts4,628
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* Total H Index Rankings
Rankings
204,826
World Rank
1,564
Country Rank
337
University
Ranking Based On Selection:
10
Natural Sciences / Geography
sustainability | historical demography | historical epidemiology | population and environment | environmental perceptio
sustainability | historical demography | historical epidemiology | population and environment | environmental perceptio
H-Index Metrics
-
H-Index34
-
i10 Index78
-
Citation Counts4,682
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* Total H Index Rankings
Rankings
215,648
World Rank
1,634
Country Rank
412
University
Ranking Based On Selection:
11
Natural Sciences / Geography
social and cultural geography | urban studies | cultural economic geography | sustainability transition | China studie
social and cultural geography | urban studies | cultural economic geography | sustainability transition | China studie
H-Index Metrics
-
H-Index33
-
i10 Index81
-
Citation Counts3,297
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* Total H Index Rankings
Rankings
225,457
World Rank
1,695
Country Rank
363
University
Ranking Based On Selection:
12
Natural Sciences / Geography
Sustainable Tourism | Multi-sensory Tourism | Accessible Tourism | Place Brandin
Sustainable Tourism | Multi-sensory Tourism | Accessible Tourism | Place Brandin
H-Index Metrics
-
H-Index32
-
i10 Index56
-
Citation Counts2,831
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* Total H Index Rankings
Rankings
238,710
World Rank
1,762
Country Rank
440
University
Ranking Based On Selection:
13
Natural Sciences / Geography
Geography | GIS & Remote Sensing | Coastal Sustainability | Urban | Mangrov
Geography | GIS & Remote Sensing | Coastal Sustainability | Urban | Mangrov
H-Index Metrics
-
H-Index31
-
i10 Index56
-
Citation Counts3,300
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* Total H Index Rankings
Rankings
250,442
World Rank
1,829
Country Rank
387
University
Ranking Based On Selection:
14
Natural Sciences / Geography
Environmental Policy | Environmental Assessment | Environmental Acoustics | Urban Environmental Qualit
Environmental Policy | Environmental Assessment | Environmental Acoustics | Urban Environmental Qualit
H-Index Metrics
-
H-Index31
-
i10 Index55
-
Citation Counts3,350
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* Total H Index Rankings
Rankings
307,389
World Rank
2,134
Country Rank
453
University
Ranking Based On Selection:
15
Natural Sciences / Geography
Sustainable Tourism | Leisure and recreation | Soundscapes and Tranquility | Natural Resource Management | China and Afric
Sustainable Tourism | Leisure and recreation | Soundscapes and Tranquility | Natural Resource Management | China and Afric
H-Index Metrics
-
H-Index27
-
i10 Index46
-
Citation Counts1,931
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* Total H Index Rankings
Rankings
318,309
World Rank
2,176
Country Rank
530
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
477,472
World Rank
2,875
Country Rank
95
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
550,285
World Rank
3,163
Country Rank
754
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
589,250
World Rank
3,303
Country Rank
776
University
Ranking Based On Selection:
19
Natural Sciences / Geography
tourism geography | sustainability | tourism politics | mobilities | practice
tourism geography | sustainability | tourism politics | mobilities | practice
H-Index Metrics
-
H-Index18
-
i10 Index20
-
Citation Counts1,071
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* Total H Index Rankings
Rankings
618,242
World Rank
3,401
Country Rank
688
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
703,988
World Rank
3,715
Country Rank
866
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
822,913
World Rank
4,238
Country Rank
720
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
1,133,329
World Rank
5,360
Country Rank
1,036
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
1,243,319
World Rank
5,788
Country Rank
1,176
University
Ranking Based On Selection:
24
Natural Sciences / Geography
Geography | Carbon Cycle | Earth System Modelling | Land use and land cover change | Carbon removal
Geography | Carbon Cycle | Earth System Modelling | Land use and land cover change | Carbon removal
H-Index Metrics
-
H-Index7
-
i10 Index7
-
Citation Counts2,795
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* Total H Index Rankings
Rankings
1,762,698
World Rank
8,118
Country Rank
1,712
University
Ranking Based On Selection:
25
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