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This research focuses on the science popularization videos in the field of earth science on the Bilibili website as its research object. Through data mining and content analysis, this research systematically analyzes the theme distribution, factors influencing communication effects, user interaction feedback, and communication challenges in 793 earth science popularization videos. The research finds that the content of these videos mainly focus on macro topics such as “cosmic exploration” and “natural geography”, while realistic issues such as “climate change” and “natural disaster” receive insufficient attention. In terms of communication effects, videos lasting 5-10 minutes show the strongest dissemination advantages, and videos released from evening to night tend to gain higher views than those posted in the morning or during working hours. Most of the comments are emotional expressions, with a high proportion of positive interaction. Currently, the main challenges for the popularization of earth science are balancing scientificity and interest, the difficulty of disseminating niche topics, the tension between knowledge depth and video duration, stratification of users’ interests and cognitive levels, platform mechanisms and uneven traffic allocation, and challenges in building credibility and public trust. To improve the quality of communication, this research proposes optimization strategies from three perspectives: enhancing creators’ diversified production capabilities, establishing a coordinated “quality-traffic-trust” mechanism, and emphasizing the social effects of science communication, providing theoretical support and practical paths for optimizing earth science popularization videos in the new media environment.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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