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
Rhizobium
Biological Nitrogen Fixation
Soil Microbiology
the N Cycle
Sustainable Agriculture
Metrics
H-Index
i10 Index
Citation Counts
62
142
12,881
* Total H IndexRankings
Ranking Based On Selection: 2
agriculture
crop science
food science
Metrics
H-Index
i10 Index
Citation Counts
56
148
10,759
* Total H IndexRankings
Ranking Based On Selection: 3
Plant-microbe interactions
Arctic soils
Bacteria
Fungi
Metrics
H-Index
i10 Index
Citation Counts
48
310
13,148
* Total H IndexRankings
Ranking Based On Selection: 4
Agri-environmental issues
Life cycle assessment
Metrics
H-Index
i10 Index
Citation Counts
36
98
4,898
* Total H IndexRankings
Ranking Based On Selection: 5
Microbial Ecology
Environmental Biotechnology
Forestry
Metrics
H-Index
i10 Index
Citation Counts
35
57
3,966
* Total H IndexRankings
Ranking Based On Selection: 6
agroecology
farming
food systems
Metrics
H-Index
i10 Index
Citation Counts
35
74
5,399
* Total H IndexRankings
Ranking Based On Selection: 7
agroecology
biodiversity
agriculture
sustainability
motivations
Metrics
H-Index
i10 Index
Citation Counts
31
49
5,734
* Total H IndexRankings
Ranking Based On Selection: 8
agroecology
Metrics
H-Index
i10 Index
Citation Counts
31
56
3,034
* Total H IndexRankings
Ranking Based On Selection: 9
Sustainable food systems
life cycle assessment
sustainable agriculture
organic farming
nutrition
Metrics
H-Index
i10 Index
Citation Counts
29
49
4,981
* Total H IndexRankings
Ranking Based On Selection: 10
agronomy
cropping systems
crop ecology
crop management
crop physiology
Metrics
H-Index
i10 Index
Citation Counts
29
55
4,205
* Total H IndexRankings
Ranking Based On Selection: 11
Sustainable agriculture
soil management
ecological engineering
Metrics
H-Index
i10 Index
Citation Counts
29
54
4,365
* Total H IndexRankings
Ranking Based On Selection: 12
Nanotechnology
Cancer Therapy
Biomaterials
Lignin Nanoparticles
Metrics
H-Index
i10 Index
Citation Counts
28
34
3,743
* Total H IndexRankings
Ranking Based On Selection: 13
Farming robots
Autonomous machinery
Virtual simulation
Electric powertrains
Metrics
H-Index
i10 Index
Citation Counts
26
35
2,671
* Total H IndexRankings
Ranking Based On Selection: 14
Organic farming
bioenergy
climatic change
global change
Metrics
H-Index
i10 Index
Citation Counts
26
44
2,567
* Total H IndexRankings
Ranking Based On Selection: 15
agriculture
loading assessments
wetlands
mitigation measures
Metrics
H-Index
i10 Index
Citation Counts
24
37
2,443
* Total H IndexRankings
Ranking Based On Selection: 16
Agroecology
Agronomy
Biochar
Lake Sediment Recycling
Nutrient Recycling
Metrics
H-Index
i10 Index
Citation Counts
22
27
2,372
* Total H IndexRankings
Ranking Based On Selection: 17
meta-analysis
modeling
leaching
cover crops
organic farming
Metrics
H-Index
i10 Index
Citation Counts
21
26
3,008
* Total H IndexRankings
Ranking Based On Selection: 18
Plant cell wall biosynthesis
Lignin biosynthesis
Plant tissue cultures
Reactive oxygen species
Effect of lignin on digestibi
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,983
* Total H IndexRankings
Ranking Based On Selection: 19
Remote sensing
3D modelling
Drones
Precision agriculture
Forest mapping
Metrics
H-Index
i10 Index
Citation Counts
20
31
2,579
* Total H IndexRankings
Ranking Based On Selection: 20
Remote sensing
Drones
Forest mapping
Precision agriculture
Stress detection
Metrics
H-Index
i10 Index
Citation Counts
20
29
2,063
* Total H IndexRankings
Ranking Based On Selection: 21
dairy cow nutrition
transition period
Metrics
H-Index
i10 Index
Citation Counts
20
27
1,541
* Total H IndexRankings
Ranking Based On Selection: 22
rural policy
regional policy
agricultural policy
governance
Metrics
H-Index
i10 Index
Citation Counts
19
31
966
* Total H IndexRankings
Ranking Based On Selection: 23
Precision Farming
Farm Information Management
Digitalization
Metrics
H-Index
i10 Index
Citation Counts
18
20
3,104
* Total H IndexRankings
Ranking Based On Selection: 24
community ecology
pollinators
microbes
dung beetles
DNA barcoding
Metrics
H-Index
i10 Index
Citation Counts
18
22
1,229
* Total H IndexRankings
Ranking Based On Selection: 25
Fish farming
environmental regulation of fish farming
Metrics
H-Index
i10 Index
Citation Counts
18
22
1,334
Kristina Lindström
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
62
142
12,881
Rhizobium
Biological Nitrogen Fixation
Soil Microbiology
the N Cycle
Sustainable Agriculture
Fred Stoddard
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
56
148
10,759
agriculture
crop science
food science
Manoj kumar
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
48
310
13,148
Plant-microbe interactions
Arctic soils
Bacteria
Fungi
Juha Grönroos
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Metrics
H-Index
i10-Index
Citation Counts
36
98
4,898
Agri-environmental issues
Life cycle assessment
Kim Yrjälä
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
35
57
3,966
Microbial Ecology
Environmental Biotechnology
Forestry
Juha Helenius
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
35
74
5,399
Irina Herzon
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
31
49
5,734
agroecology
biodiversity
agriculture
sustainability
motivations
Terho Hyvönen
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
31
56
3,034
Hanna L Tuomisto
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
29
49
4,981
Sustainable food systems
life cycle assessment
sustainable agriculture
organic farming
nutrition
Pirjo Mäkelä
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
29
55
4,205
agronomy
cropping systems
crop ecology
crop management
crop physiology
Tuomas J. Mattila
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Metrics
H-Index
i10-Index
Citation Counts
29
54
4,365
Sustainable agriculture
soil management
ecological engineering
Patrícia Figueiredo
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
28
34
3,743
Nanotechnology
Cancer Therapy
Biomaterials
Lignin Nanoparticles
Antti Lajunen
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
26
35
2,671
Farming robots
Autonomous machinery
Virtual simulation
Electric powertrains
Kaija Hakala
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
26
44
2,567
Organic farming
bioenergy
climatic change
global change
Markku Puustinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Metrics
H-Index
i10-Index
Citation Counts
24
37
2,443
agriculture
loading assessments
wetlands
mitigation measures
Priit Tammeorg
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
22
27
2,372
Agroecology
Agronomy
Biochar
Lake Sediment Recycling
Nutrient Recycling
Elena Valkama
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
21
26
3,008
meta-analysis
modeling
leaching
cover crops
organic farming
Anna Kärkönen (now: Anna Happonen)
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
21
31
1,983
Plant cell wall biosynthesis
Lignin biosynthesis
Plant tissue cultures
Reactive oxygen species
Effect of lignin on digestibi
Niko Koivumäki
National Land Survey of Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
20
31
2,579
Remote sensing
3D modelling
Drones
Precision agriculture
Forest mapping
Roope Näsi
National Land Survey of Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
20
29
2,063
Remote sensing
Drones
Forest mapping
Precision agriculture
Stress detection
Tuomo Kokkonen
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
20
27
1,541
dairy cow nutrition
transition period
Hilkka Vihinen
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
19
31
966
rural policy
regional policy
agricultural policy
governance
Liisa Pesonen
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
18
20
3,104
Precision Farming
Farm Information Management
Digitalization
Helena Wirta
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
18
22
1,229
community ecology
pollinators
microbes
dung beetles
DNA barcoding
Timo Mäkinen
Natural Resources Institute, Finland
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
18
22
1,334
Fish farming
environmental regulation of fish farming