ArticleJournal of ethnobiology and ethnomedicine2026
Ethnomedicinal plants used by Guoshan Yao minority communities in the foothills of Nanling Mountain, Guangdong, China.
Article in Journal of ethnobiology and ethnomedicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe Guoshan Yao, a subgroup of the Yao ethnic minority in China, inhabit the biodiverse Nanling Mountain region. Their traditional knowledge (TK) of medicinal plants is increasingly threatened by socio-economic development, generational knowledge loss, and conservation policies. This study documents the medicinal plant diversity, and usage trends, analyzes TK transmission pathways, assesses influencing factors on the medicinal plant use knowledge and compares use knowledge with other Yao groups.
methodsA total of 86 respondents (aged 20-90) from Guoshan Yao households were interviewed in the villages of Nanling National Nature Reserve, Guangdong, China. The Relative Importance (RI) index of the recorded plant species was calculated, negative binomial regression was used to assess factors influencing medicinal plant use knowledge, and the Jaccard index of similarity (JI) was used for the cross cultural analysis.
resultsA total of 61.6% of respondents relied on medicinal plants for primary healthcare; however, 41.8% of respondents reported declining trend in this practice. We documented 224 medicinal plants from 188 genera and 90 families. The most common therapeutic use was for traumatic injuries and orthopedic conditions (71 species, 31.7%). Among the recorded species, Polygala japonica had the highest RI value (2). The negative binomial regression indicated that medicinal plant use knowledge was significantly associated with the source of knowledge transfer, with vertical and multiple sources being significant. Cross-cultural analysis with the Yao of Guangxi and Hunan showed that knowledge of medicinal plants is quite similar among the Yao of Gongcheng Guangxi (JI = 0.18) .
conclusionThe Guoshan Yao maintain substantial TK of medicinal plants, the conservation of which depends on vertical and multiple sources knowledge transmission systems. To conserve this knowledge, we recommend promoting the dissemination of knowledge beyond familial boundaries through community awareness programs, and inter-generational interaction.
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