《Table 2 Statistics of key words and centrality of literature about climate change and agriculture i

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《Current Situation and Hot Spots of Domestic Climate Changes——Based on Bibliometric Analysis of CSSCI Source Periodicals in 1996-2016》

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Agriculture is the most sensitive and vulnerable area of climate change，and climate change will pose a certain threat to the grain security.In view of this，it is of great significance for making clear the research direction，deepening the agricultural field，and ensuring China’s grain security.Through statistics of 439 papers，we obtained 365 key words，and selected 54 key words with frequency of use not less than two times，as shown in Table 2.Rejecting those completely repeated key words，we finally selected50 key words as the research hot spot in the field of domestic climate change.From Fig.4，it can be seen that top ten key words were climate change，precipitation，temperature，China，adaptation，low carbon agriculture，vulnerability，change trend，Inner Mongolia，and effect.All these words appeared more than six times.These key words could basically reflect the main research hot spots of climate change in domestic periodicals.