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 Jan 30, 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 (873.690) 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
Environmental Science & Engineering
Contaminant Hydrology
Environmental Nanotechnology
Biochar
Metrics
H-Index
i10 Index
Citation Counts
121
404
61,599
* Total H IndexRankings
Ranking Based On Selection: 2
phenomics
crop physiology
climate change
Metrics
H-Index
i10 Index
Citation Counts
74
191
23,469
* Total H IndexRankings
Ranking Based On Selection: 3
Solid and Hazardous Waste Management
Metrics
H-Index
i10 Index
Citation Counts
69
251
16,818
* Total H IndexRankings
Ranking Based On Selection: 4
Sustainable Agriculture
Water Quality
Soil Quality
Bioenergy
Climate Change
Metrics
H-Index
i10 Index
Citation Counts
69
231
13,843
* Total H IndexRankings
Ranking Based On Selection: 5
Systems Ecology
Ecological Engineering
Emergy
Wetlands
Metrics
H-Index
i10 Index
Citation Counts
68
227
27,911
* Total H IndexRankings
Ranking Based On Selection: 6
Heterogeneous catalysis
Environmental catalysis
Single atom catalysis
Greenhouse gas
XAS
Metrics
H-Index
i10 Index
Citation Counts
61
113
12,277
* Total H IndexRankings
Ranking Based On Selection: 7
sustainability
environmental engineering
water
sanitation
hygiene
Metrics
H-Index
i10 Index
Citation Counts
57
152
13,923
* Total H IndexRankings
Ranking Based On Selection: 8
aerosol
air pollution
nanotechnology
engineering education
Metrics
H-Index
i10 Index
Citation Counts
55
142
11,686
* Total H IndexRankings
Ranking Based On Selection: 9
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
43
117
6,420
* Total H IndexRankings
Ranking Based On Selection: 10
ecotoxicology
reproductive physiology
endocrine disruption
Metrics
H-Index
i10 Index
Citation Counts
36
72
4,411
* Total H IndexRankings
Ranking Based On Selection: 11
environmental science
agriculture
Metrics
H-Index
i10 Index
Citation Counts
35
71
3,771
* Total H IndexRankings
Ranking Based On Selection: 12
Biogeochemistry of Trace Metals
Environmental Nanotechnology
Remediation
Metrics
H-Index
i10 Index
Citation Counts
35
67
5,350
* Total H IndexRankings
Ranking Based On Selection: 13
Water Chemistry
Water Quality
Sustainability
Metrics
H-Index
i10 Index
Citation Counts
35
78
4,444
* Total H IndexRankings
Ranking Based On Selection: 14
Magnetic MEMS
environmental sensors
microfabrication
Metrics
H-Index
i10 Index
Citation Counts
33
75
3,793
* Total H IndexRankings
Ranking Based On Selection: 15
urban water
stormwater
water use
water budgets
cost allocation
Metrics
H-Index
i10 Index
Citation Counts
33
86
4,294
* Total H IndexRankings
Ranking Based On Selection: 16
Water Resources
Ecological Engineering
Hydrology
Sustainability
Water Quality Modeling
Metrics
H-Index
i10 Index
Citation Counts
32
56
4,111
* Total H IndexRankings
Ranking Based On Selection: 17
Environment
anthropology
forests
coffee
Latin America
Metrics
H-Index
i10 Index
Citation Counts
31
49
4,364
* Total H IndexRankings
Ranking Based On Selection: 18
Water resources
ecohydrology
Metrics
H-Index
i10 Index
Citation Counts
30
49
2,490
* Total H IndexRankings
Ranking Based On Selection: 19
Aquatic Pathology and Toxicology
Environmental and Public Health
Scientific Communications
Metrics
H-Index
i10 Index
Citation Counts
29
53
3,310
* Total H IndexRankings
Ranking Based On Selection: 20
plant breeding
genetics
genomics
genetic transformation
CRISPR gene editing
Metrics
H-Index
i10 Index
Citation Counts
27
77
3,094
* Total H IndexRankings
Ranking Based On Selection: 21
air quality
water quality
animal manure and wastewater
Metrics
H-Index
i10 Index
Citation Counts
27
59
2,742
* Total H IndexRankings
Ranking Based On Selection: 22
Water Sustainability
Hydrology
Water Qualtiy
Agricultural Systems
Metrics
H-Index
i10 Index
Citation Counts
26
55
2,474
* Total H IndexRankings
Ranking Based On Selection: 23
Wastewater Treatment
Nutrient Removal
Biofilms
Microbial Water Quality
Metrics
H-Index
i10 Index
Citation Counts
26
37
3,181
* Total H IndexRankings
Ranking Based On Selection: 24
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
25
40
1,996
* Total H IndexRankings
Ranking Based On Selection: 25
ornamentals
invasive plants
native plants
propagation
Metrics
H-Index
i10 Index
Citation Counts
25
63
2,161
Bin Gao
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
121
404
61,599
Environmental Science & Engineering
Contaminant Hydrology
Environmental Nanotechnology
Biochar
Jeffrey W White
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
74
191
23,469
phenomics
crop physiology
climate change
Timothy Townsend
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
69
251
16,818
Solid and Hazardous Waste Management
Ashok Alva
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
69
231
13,843
Sustainable Agriculture
Water Quality
Soil Quality
Bioenergy
Climate Change
Mark T Brown
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
68
227
27,911
Systems Ecology
Ecological Engineering
Emergy
Wetlands
Fudong Liu
Metrics
H-Index
i10-Index
Citation Counts
61
113
12,277
Heterogeneous catalysis
Environmental catalysis
Single atom catalysis
Greenhouse gas
XAS
James R Mihelcic
Metrics
H-Index
i10-Index
Citation Counts
57
152
13,923
sustainability
environmental engineering
water
sanitation
hygiene
Chang Yu Wu
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
55
142
11,686
aerosol
air pollution
nanotechnology
engineering education
Michael D Annable
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
43
117
6,420
Environmental Engineering
Kevin J Kroll
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
36
72
4,411
ecotoxicology
reproductive physiology
endocrine disruption
Roger Kjelgren
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
35
71
3,771
environmental science
agriculture
Jean Claude J Bonzongo
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
35
67
5,350
Biogeochemistry of Trace Metals
Environmental Nanotechnology
Remediation
Joseph J Delfino
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
35
78
4,444
Water Chemistry
Water Quality
Sustainability
Hyoung Jin Cho
Metrics
H-Index
i10-Index
Citation Counts
33
75
3,793
Magnetic MEMS
environmental sensors
microfabrication
James Heaney
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
33
86
4,294
urban water
stormwater
water use
water budgets
cost allocation
Mauricio E Arias
Metrics
H-Index
i10-Index
Citation Counts
32
56
4,111
Water Resources
Ecological Engineering
Hydrology
Sustainability
Water Quality Modeling
Catherine M Tucker
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
31
49
4,364
Environment
anthropology
forests
coffee
Latin America
David Kaplan
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
30
49
2,490
Water resources
ecohydrology
Andrew Kane
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
29
53
3,310
Aquatic Pathology and Toxicology
Environmental and Public Health
Scientific Communications
Zhanao Deng
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
27
77
3,094
plant breeding
genetics
genomics
genetic transformation
CRISPR gene editing
Saqib Mukhtar
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
27
59
2,742
air quality
water quality
animal manure and wastewater
Sanjay Shukla
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
26
55
2,474
Water Sustainability
Hydrology
Water Qualtiy
Agricultural Systems
Andrew Randall
Metrics
H-Index
i10-Index
Citation Counts
26
37
3,181
Wastewater Treatment
Nutrient Removal
Biofilms
Microbial Water Quality
Jeffrey Cunningham
Metrics
H-Index
i10-Index
Citation Counts
25
40
1,996
Environmental Engineering
Sandra B Wilson
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
25
63
2,161
ornamentals
invasive plants
native plants
propagation