文献类型：期刊文献

英文题名：Effects of Anthropogenic Disturbance on the Structure, Competition, and Succession of Abies ziyuanensis Communities

作者：Zhang, Huacong[1,2,3] Li, Yueqiao[1,2,3,4] Xu, Keqin[1] Yu, Longhua[1,2] He, Ping[1,2] Zeng, Suping[1,2] Song, Yunxia[1,2] Liu, Ren[1,2] Sun, Yun[1,2]

第一作者：张华聪;Zhang, Huacong

通信作者：Li, YQ[1];Li, YQ[2];Li, YQ[3];Li, YQ[4]

机构：[1]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Xinyu 336600, Peoples R China;[2]Forest Carbon Sink Monitoring & Regulat Xinyu Key, Xinyu 336600, Peoples R China;[3]Biodivers Conservat & Bioresource Utilizat Jiangxi, Xinyu 336600, Peoples R China;[4]State Key Lab Tree Genet & Breeding, Beijing 100080, Peoples R China

年份：2024

卷号：15

期号：6

外文期刊名：FORESTS

收录：;EI(收录号：20242616510463);Scopus(收录号：2-s2.0-85197205466);WOS:【SCI-EXPANDED(收录号:WOS:001257103600001)】；

基金：This research was funded by the National Forestry and Grassland Administration's 2019 project for the field rescue and artificial breeding of rare and endangered species, as well as the 13thFive-Year National Key Research and Development Program project, with project numbers 20190730and 2017YFD0601102, respectively.

语种：英文

外文关键词：subtropical forest; relict; endangered; species diversity; forest environment; Abies ziyuanensis

摘要：Attention to habitat dynamics in subtropical mid-mountain forest plant communities containing endangered vegetation is critical for understanding the responses of ecosystems to global climate change and for their effective conservation. This study examines the species composition, structure, and interspecies competition within endemic and endangered Abies ziyuanensis (Abies ziyuanensis L.K.Fu and S.L.Mo) communities in China, comparing undisturbed and anthropogenically disturbed conditions. The survey recorded a total of 71 plant species across 39 families and 60 genera. PERMANOVA analysis highlighted significant disparities in species composition between the two forest community conditions. Communities impacted by anthropogenic disturbances showed a higher diversity of shrub and herbaceous species compared to those that were undisturbed, coupled with a significant increase in the number of Abies ziyuanensis seedlings, suggesting a greater potential for self-renewal. Nonetheless, the distribution of diameter class structures in these two community conditions indicates a declining trend in population numbers. In undisturbed Abies ziyuanensis communities, the Weighted Hegyi Competition Index (WCI) for Abies ziyuanensis was 6.04, below the average WCI of 12.24 for all trees within these communities. In contrast, within communities affected by anthropogenic disturbances, the WCI for Abies ziyuanensis reached 7.76, higher than the average WCI of 7.43 for all trees, indicating that Abies ziyuanensis in disturbed communities face heightened competitive pressure compared to undisturbed settings. These findings underscore that previous anthropogenic disturbances have altered the community composition, competition dynamics, growth environment, and succession trends of Abies ziyuanensis communities. While these disturbances promote the regeneration of Abies ziyuanensis, they also reduce its current dominance as a target species.