Who cares about agriculture? Analyzing German parliamentary debates on agriculture and food with structural topic modeling
利用结构主题模型分析2017-2022年德国联邦议院关于农业和食品的议会辩论，识别出24个主题，发现经济问题和行业转型的关注度上升，而农村发展关注度下降，且辩论内容受政党、选区、性别和年龄影响。
• Structural Topic Modeling is used to analyze German parliamentary debates on agriculture, focusing on the 2023 CAP reform. • 24 topics are found, with rising focus on economic issues and sector transformation and less attention to rural development. • parliamentary discourse varies by party affiliation and socio-economic characteristics of the speakers. • findings show alignment between debates and key agri-food challenges, with national politics influencing broader EU policy. This study employs structural topic modeling (STM) to quantitatively and for the first time analyze parliamentary debates on agriculture and food in the German Bundestag, focusing on the period leading up to the 2023 reform of the Common Agricultural Policy (CAP). Drawing on data from parliamentary speeches between January 2017 and June 2022, the research aims to understand whether and, if so, how key challenges of the agri-food sector identified by scientists are addressed by the parliamentarians. The paper thus adds empirical evidence concerning the debate on the uptake of research knowledge in politics. It does so by identifying key topics, tracking their temporal evolution, and assessing how party affiliation, constituency, gender, and age of the speakers influence discourse. The results reveal 24 distinct topics, spanning areas such as agriculture-environment interactions, rural development, animal welfare, and economic aspects of farming. Temporal analysis shows shifting priorities over time, with economic issues and sector transformation gaining prominence as CAP negotiations progress. Critically, the findings suggest that parliamentary discourse in Germany aligns with main challenges the agri-food sector faces, albeit with variations influenced by party affiliation, geographical and demographic factors. Overall, this study contributes to a better understanding of parliamentary engagement with agricultural issues and informs policy-making and voter decision-making processes. Its breakdown of how (frequently) certain issues were discussed reveals general trends, but also country-specific challenges, allowing for better comparative policy analysis.