The 2025 Sumatra flood disaster sparked debate over the urgency of declaring national disaster status across various social systems. Limited research on how social systems resonate in the discourse surrounding disaster declarations makes this study urgently needed. This study aims to analyze how social systems resonate in the discourse on declaring Sumatra a national disaster in Tempo’s coverage. This study employs Niklas Luhmann’s concepts of media reality construction and social system resonance within the framework of ecological communication, which are then applied as research methods. Based on an analysis of the December 2025 and early January 2026 issues of Tempo magazine, this study found that six social systems resonated with the discourse on the declaration of a national disaster status for Sumatra, with the political and scientific systems exhibiting closed resonance compared to the other four systems—which are open in nature—namely the legal system, the economic system, the public health system, and the voluntarism system. This study contributes to the development of ecological communication studies as an alternative solution for resolving environmental issues.
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