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Drawing on Hilgartner's taxonomy, this study compares 49,633 public\u2010initiated messages from the Message Board for Leaders and 3,475 posts from official governmental Weibo accounts in China. Combining topic modeling, LIWC\u2010based text analysis, and econometric models, we examine how heat risk is constructed in public and governmental texts, how heat\u2010related communication varies across cities and over time, and how textual features and risk\u2010construction intensity are associated with platform\u2010observable communication outcomes. The findings show that public messages are more problem\u2010solving and demand\u2010oriented, whereas government posts are more prevention\u2010 and guidance\u2010oriented. Public and governmental communication exhibit asymmetry in both the prevalence of textual features and their associations with governmental responsiveness and public engagement. At the city\u2010year level, risk construction and communication effectiveness exhibit short\u2010run inconsistency but adjust toward a long\u2010run equilibrium relationship, suggesting that heat\u2010risk communication is an adaptive process shaped through repeated public\u2010government platform interactions.<\/jats:p>","DOI":"10.1111\/risa.70359","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T04:19:56Z","timestamp":1789532396000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Communicating and Constructing Risk: Government and Public Interactions in Responding to Heat Risks"],"prefix":"10.1111","volume":"46","author":[{"given":"Liangdong","family":"Lu","sequence":"first","affiliation":[{"name":"Business School Hohai University  Nanjing People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weijian","family":"Jiang","sequence":"additional","affiliation":[{"name":"School of Management University of Science and Technology of China  Hefei People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jia","family":"Xu","sequence":"additional","affiliation":[{"name":"Business School Hohai University  Nanjing People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,15]]},"reference":[{"key":"e_1_2_9_2_1","unstructured":"Aven T. 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