Analysis of the Spatio-Temporal Evolution Characteristics and Influencing Factors of Public Opinion on Meteorological Disasters
Social media contributes to the spread of meteorological disaster information.The development of public opinion on meteorological disasters affects public perceptions of disasters as well as attitudes.This study takes the"3·15 sandstorm","Zhengzhou rainstorm",and"typhoon fireworks"in 2021 as the research objects,and com-bines LDA Theme Analysis and Sentiment Dictionary Analysis to explore the temporal evolution characteristics of public opinion on meteorological disasters.This study also analyzes the spatial distribution of public opinion hotness in different regions and influencing factors based on spatial autocorrelation theory.The results show that the themes of public concern differ significantly at different stages of public opinion.The average positive sentiment embedded in the public opinion text tends to increase with the stage of public opinion,and the average negative sentiment rea-ches its peak during the outbreak period.Different regions pay significantly different attention to meteorological dis-asters,which are mainly influenced by factors such as spatial distance,regional economy,and netizens'scale.The research results reveal the universal characteristics of public opinion on meteorological disasters,which provide the-oretical guidance for the stage guidance and governance of meteorological disaster public opinion.
public opinion on meteorological disasterstheme analysissentiment analysisspatial distributionspatial autocorrelation
NETL
NSTL
万方数据
