Table 1.

The main publishing countries and research topics

Country	Number of published papers	Average number of citations	Research topics
China	608	9.32	Environmental sciences-Ecology, Business-Economics, Science and Technology-Other topics, Engineering, Geography
The United States	87	32.99	Environmental sciences-Ecology, Science and Technology-Other topics, Biodiversity conservation, Meteorology-Atmospheric sciences, Business-Economics
England	36	26.61	Environmental sciences-Ecology, Business-Economics, Science and Technology-Other topics, Engineering, Government law
Russia	29	2.48	Environmental sciences-Ecology, Business-Economics, Education-Educational research, Computer science, Science and Technology-Other topics
Australia	26	28.92	Environmental sciences-Ecology, Meteorology-Atmospheric sciences, Engineering, Biodiversity conservation, Business-Economics
Germany	26	36.96	Environmental sciences-Ecology, Business-Economics, Biodiversity conservation, Agriculture, Geography
Canada	22	43.27	Environmental sciences-Ecology, Business-Economics, Biodiversity conservation, Science and Technology-Other topics, Anthropology
Poland	17	15.24	Environmental sciences-Ecology, Business-Economics, Geology, Agriculture, Architecture