A Study on Theme Construction of Forest Documentaries from the Perspective of Multimodal Discourse Analysis —— Taking Forest China as an Example 
Li Xintong  Liang Ziqi

Northeast Forestry University, Harbin Heilongjiang Province, 150040;

Abstract: Based on multimodal discourse analysis, social semiotics and systemic functional linguistics, this study builds a multimodal analytical framework. By annotating and analyzing linguistic, visual and auditory modalities in Forest China excerpts with the ELAN tool, it explores documentary theme construction approaches. The results show that these three modalities form a time-linked semiotic synergy around the “forest arena” theme: each plays its distinct role, and their in-depth synergy breaks single-modal limitations, jointly constructing the ecological narrative of the “forest arena”.

Keywords: Multimodal Discourse Analysis; Forest Documentaries; Grammar of Visual Design

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