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 31, 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
water engineering
algae
water treatment
wastewater treatment
coagulation
Metrics
H-Index
i10 Index
Citation Counts
88
236
30,781
* Total H IndexRankings
Ranking Based On Selection: 2
Hydroinformatics
Water resources systems
Water engineering
Floods
Water resources
Metrics
H-Index
i10 Index
Citation Counts
86
361
32,077
* Total H IndexRankings
Ranking Based On Selection: 3
Geochemistry of Trace Elements
Soil and water pollution by toxic metals
Remediation of toxic metals contaminated soils and waters
Metrics
H-Index
i10 Index
Citation Counts
80
222
22,139
* Total H IndexRankings
Ranking Based On Selection: 4
Phosphorus
Conservation
Soil and Water Engineering
Environmental Science
Metrics
H-Index
i10 Index
Citation Counts
60
154
12,165
* Total H IndexRankings
Ranking Based On Selection: 5
soil erosion
environmental processes
tracer properties
radionuclides
Metrics
H-Index
i10 Index
Citation Counts
60
153
9,608
* Total H IndexRankings
Ranking Based On Selection: 6
Wastewater engineering
Metrics
H-Index
i10 Index
Citation Counts
60
151
15,697
* Total H IndexRankings
Ranking Based On Selection: 7
Soil Mineralogy
Metrics
H-Index
i10 Index
Citation Counts
58
142
16,857
* Total H IndexRankings
Ranking Based On Selection: 8
Metrics
H-Index
i10 Index
Citation Counts
56
146
14,099
* Total H IndexRankings
Ranking Based On Selection: 9
Conservation Agriculture
Sustainable Land Management
Soil and Water Conservation
Biology
Agronomy
Metrics
H-Index
i10 Index
Citation Counts
53
111
10,711
* Total H IndexRankings
Ranking Based On Selection: 10
Cereals breeding
Genetic diversity
Cereals domestication
Metrics
H-Index
i10 Index
Citation Counts
52
107
12,785
* Total H IndexRankings
Ranking Based On Selection: 11
phosphorus
carbon
biochar
Metrics
H-Index
i10 Index
Citation Counts
49
87
13,591
* Total H IndexRankings
Ranking Based On Selection: 12
Hydrology
Water engineering
Hydraulics
Risk and reliability
Metrics
H-Index
i10 Index
Citation Counts
48
101
10,983
* Total H IndexRankings
Ranking Based On Selection: 13
Hydrology
Water Engineering
Natural hazards
Compound events
Metrics
H-Index
i10 Index
Citation Counts
46
128
9,818
* Total H IndexRankings
Ranking Based On Selection: 14
Ecotoxicology
Metrics
H-Index
i10 Index
Citation Counts
45
138
7,267
* Total H IndexRankings
Ranking Based On Selection: 15
Soil fertility
nutrient management
plant nutrition
Metrics
H-Index
i10 Index
Citation Counts
43
150
7,516
* Total H IndexRankings
Ranking Based On Selection: 16
Food sovereignty
agroecology
environment
participatory democracy
transdisciplinary research
Metrics
H-Index
i10 Index
Citation Counts
43
101
8,648
* Total H IndexRankings
Ranking Based On Selection: 17
Soil and Water Conservation
Water-Use Efficiency
Woody Fruit Crops
Subtropical Farming
Metrics
H-Index
i10 Index
Citation Counts
42
101
6,897
* Total H IndexRankings
Ranking Based On Selection: 18
Hydrogoelogy
isotopic geochemistry
climate change
Metrics
H-Index
i10 Index
Citation Counts
40
71
3,562
* Total H IndexRankings
Ranking Based On Selection: 19
desertification
semiarid hydrology
forest restoration
land degradation
soil erosion
Metrics
H-Index
i10 Index
Citation Counts
40
60
7,385
* Total H IndexRankings
Ranking Based On Selection: 20
Soil Physics and Management
Conservation Tillage
Metrics
H-Index
i10 Index
Citation Counts
40
65
5,135
* Total H IndexRankings
Ranking Based On Selection: 21
Ecohydrology
Soil hydrology
Soil and water conservation
Modeling
Metrics
H-Index
i10 Index
Citation Counts
39
91
4,454
* Total H IndexRankings
Ranking Based On Selection: 22
Metrics
H-Index
i10 Index
Citation Counts
39
65
6,757
* Total H IndexRankings
Ranking Based On Selection: 23
soil fertility
evapotranspiration
nitrogen
phosphorus
nutrient balance
Metrics
H-Index
i10 Index
Citation Counts
39
130
5,743
* Total H IndexRankings
Ranking Based On Selection: 24
biological invasions
weed ecology and climate change
interdisciplinary ecological-economic research
Metrics
H-Index
i10 Index
Citation Counts
38
74
7,550
* Total H IndexRankings
Ranking Based On Selection: 25
Sulama
su yönetimi
gıda güvenliği
Metrics
H-Index
i10 Index
Citation Counts
37
70
4,730
Bruce Jefferson
Cranfield University
Cranfield, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
88
236
30,781
water engineering
algae
water treatment
wastewater treatment
coagulation
Dragan Savic
University of Exeter
Exeter, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
86
361
32,077
Hydroinformatics
Water resources systems
Water engineering
Floods
Water resources
Sabry Shaheen
Kafr El Sheikh University
Kafr el-Sheikh, Egypt
Metrics
H-Index
i10-Index
Citation Counts
80
222
22,139
Geochemistry of Trace Elements
Soil and water pollution by toxic metals
Remediation of toxic metals contaminated soils and waters
Kevin King
US Department of Agriculture
Washington, United States
Metrics
H-Index
i10-Index
Citation Counts
60
154
12,165
Phosphorus
Conservation
Soil and Water Engineering
Environmental Science
Ana Navas
Metrics
H-Index
i10-Index
Citation Counts
60
153
9,608
soil erosion
environmental processes
tracer properties
radionuclides
Tom Stephenson
Cranfield University
Cranfield, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
60
151
15,697
Willie Harris
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
58
142
16,857
GA O Connor
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
56
146
14,099
Christian Thierfelder
Metrics
H-Index
i10-Index
Citation Counts
53
111
10,711
Conservation Agriculture
Sustainable Land Management
Soil and Water Conservation
Biology
Agronomy
Hakan Özkan
Çukurova University
Adana, Türkiye
Metrics
H-Index
i10-Index
Citation Counts
52
107
12,785
Cereals breeding
Genetic diversity
Cereals domestication
Vimala Nair
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
49
87
13,591
phosphorus
carbon
biochar
Renzo Rosso
Politecnico di Milano
Milano, Italy
Metrics
H-Index
i10-Index
Citation Counts
48
101
10,983
Hydrology
Water engineering
Hydraulics
Risk and reliability
Carlo De Michele
Politecnico di Milano
Milano, Italy
Metrics
H-Index
i10-Index
Citation Counts
46
128
9,818
Hydrology
Water Engineering
Natural hazards
Compound events
Michael ST John Warne
Coventry University
Coventry, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
45
138
7,267
George Hochmuth
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
43
150
7,516
Soil fertility
nutrient management
plant nutrition
Michel Pimbert
Coventry University
Coventry, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
43
101
8,648
Food sovereignty
agroecology
environment
participatory democracy
transdisciplinary research
Víctor Hugo Durán Zuazo
Metrics
H-Index
i10-Index
Citation Counts
42
101
6,897
Soil and Water Conservation
Water-Use Efficiency
Woody Fruit Crops
Subtropical Farming
Younes Hamed
Université de Gafsa
Gafsa, Tunisia
Metrics
H-Index
i10-Index
Citation Counts
40
71
3,562
Hydrogoelogy
isotopic geochemistry
climate change
Victor M. Castillo
Metrics
H-Index
i10-Index
Citation Counts
40
60
7,385
desertification
semiarid hydrology
forest restoration
land degradation
soil erosion
José Luis Arrúe
Metrics
H-Index
i10-Index
Citation Counts
40
65
5,135
Soil Physics and Management
Conservation Tillage
Xiaodong Gao
Northwest A & F University
Yangling, China
Metrics
H-Index
i10-Index
Citation Counts
39
91
4,454
Ecohydrology
Soil hydrology
Soil and water conservation
Modeling
Carolina Boix-Fayos
Metrics
H-Index
i10-Index
Citation Counts
39
65
6,757
Kelly Morgan
University of Florida
Gainesville, United States
Metrics
H-Index
i10-Index
Citation Counts
39
130
5,743
soil fertility
evapotranspiration
nitrogen
phosphorus
nutrient balance
Katharina Dehnen Schmutz
Coventry University
Coventry, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
38
74
7,550
biological invasions
weed ecology and climate change
interdisciplinary ecological-economic research
Attila Yazar
Çukurova University
Adana, Türkiye
Metrics
H-Index
i10-Index
Citation Counts
37
70
4,730
Sulama
su yönetimi
gıda güvenliği