文献类型：期刊文献

英文题名：Effects of grazing on the relationship between dominant shrubs and understory vegetation along sand dune stability gradient

作者：Zhu, Tiantian[1] Cao, Wenxu[1] Li, Xu[1] Hai, Lu[2] Zhao, Xiulian[1] Li, Qinghe[1]

第一作者：Zhu, Tiantian

通信作者：Zhao, XL[1];Li, QH[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Efficient Prod Forest Resources, Key Lab Tree Breeding & Cultivat,Natl Forestry & G, Beijing, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou, Peoples R China

年份：2024

卷号：19

期号：11

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-85208789474);WOS:【SCI-EXPANDED(收录号:WOS:001352127000017)】；

基金：This work was supported by the grants from the National Natural Science Foundation of China(No. 31470622).The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript

语种：英文

摘要：During the process of dune vegetation restoration, understanding how grazing disturbance affects the relationship between plant species is a critical issue in ecological studies. However, there is insufficient evidence on the changes in the interaction between dominant shrubs and understory vegetation under grazing behavior. We aimed to study how grazing and dune stabilization affects the relationship between Caragana microphylla and understory vegetation. We established fencing at various stages of dune stabilization and proceeded to compared the performance indicators (e.g., richness and biomass) and the relative interaction index of understory vegetation and different functional groups along the dune stability under grazing and fencing conditions. Results showed that C. microphylla had facilitation on understory plants, and increased with dune stability, while the facilitation of Caragana microphylla on understory vegetation was stronger under grazing conditions. As sand dune stabilization increases, the facilitation of C. microphylla on understory vegetation diversity decreases significantly. However, there was no significant difference in the facilitation of C. microphylla on understory vegetation biomass at different stages of sand dune stabilization. This is related to the survival strategy of perennials being less tolerant to environmental stress than annuals, because grazing increased the richness of both annuals and perennials while reducing the overall biomass, and in the later stages of sand dune stabilization, and the facilitation of C. microphylla on perennials was higher than on annuals. Our study highlights the importance of the responses of different life-form groups to environmental factors and grazing disturbance during the process of sand dune vegetation restoration, as they play a crucial role in shaping the development of the relationship between understory vegetation and dominant shrubs.