Actions and reports of archival institutions: a measurement study of policy documents on adaptation to climate change in key areas of China

This study collected a total of 2,318 policy documents on adapting to climate change in key areas from various central government departments of China. The policies were divided into four stages. Subsequently, we used LDA to conduct policy topic mining, identifying 23 policy themes, drawing a Sankey diagram for the diffusion of policy themes. The research findings indicate that the overall trajectory of policy evolution shows a development pattern from dispersion to integration, from local to global, from initial exploration to focused breakthroughs. The change in policy propositions lies in the fact that the focus of policy themes varies at different stages: the comprehensiveness of the policy content has been enhanced, with laws and regulations continuing to deepen and become more complete; the unchanging aspect of the policy proposition is that policy formulation gives priority to regions across the country significantly affected by climate change; the policy content consistently attaches great importance to disaster prevention and mitigation-related work; finally, the relevant policies and actions have always been in line with the goals, principles, and institutional arrangements of international climate change response policies.