安徽农业大学学报2024，Vol.51Issue(3)：359-367,9.DOI:10.13610/j.cnki.1672-352x.20240710.005
加拿大一枝黄花和小飞蓬共同入侵对植物群落的影响
Effects of the co-invasion of Solidago canadensis and Erigeron Canadensis on aboveground plant communities
摘要
Abstract
In order to clarify the coexistence mechanism of invasive plants and native plants under the co-invasion of two invasive plants,this study took the plant communities invaded by Solidago canadensis and Erigeron canadensis as the research object.The composition,diversity,niche width and functional traits of plant communities under different invasion levels were analyzed by quadrat method,and the effects of the co-invasion of two invasive plants on the diversity of aboveground plant communities were explained.The results showed that:(1)There were some differences in plant community composition between the invaded and uninvaded regions of S.canadensis and E.canadensis.Compared with single invasion,co-invasion increased the number of plant species in plant communities by 20.00%-66.67%.(2)Both single invasion and co-invasion significantly reduced the plant community diversity,and the number of species decreased by 18.75%-37.50%;the Shannon diversity in-dex decreased by 29.33%-65.33%,and the Pielou evenness index decreased by 38.60%-52.31%.(3)The domi-nant species in the co-invasion area of S.canadensis and E.canadensis were 1-3 more than those in the single invasion area.Under the condition of co-invasion,the niche overlap between invasive species and companion species was higher than that between companion species.(4)Compared with single invasion,co-invasion in-creased the five functional traits of coexisting plant species,including stem diameter,leaf area,leaf length,leaf width and belowground biomass,and increased the leaf area and leaf length of the two invasive plants by 13.70%-684.95%and 32.10%-71.55%,respectively.This study showed that the co-invasion antagonism of S.Canadensis and E.canadensis affects the plant community diversity,which can provide a theoretical basis for elucidating the coexistence mechanism of invasive plants and other plant species under the co-invasion of two invasive plants.关键词
共同入侵/加拿大一枝黄花/入侵植物/小蓬草/地上植被特征Key words
co-invasion/Solidago canadensis/invasive plants/Erigeron canadensis/aboveground vegeta-tion characteristics分类
农业科技引用本文复制引用
何孟莹,解青松,李玥,尹宣懿,刘婷婷,龙依依,张震..加拿大一枝黄花和小飞蓬共同入侵对植物群落的影响[J].安徽农业大学学报,2024,51(3):359-367,9.基金项目
国家自然科学基金项目(31772235)和植被与环境变化国家重点实验室开放课题(LVEC-2022kf01)共同资助. （31772235）
