Rank Country/Region Number Institution Number
1 USA 759 Chinese Acad Sci 113
2 China 507 Beijing Normal Univ 84
3 Canada 220 Univ Regina 80
4 Australia 139 North China Elect Power Univ 68
5 Germany 123 Texas A&M Univ 50
6 Netherlands 101 USDA ARS 45
7 England 100 China Agr Univ 43
8 Iran 79 Peking Univ 40
9 Spain 70 US Geol Survey 34
10 Italy 66 Delft Univ Technol 33