外来植物刺萼龙葵对当地植被组成及多样性的影响  

Effects of alien plant Solanum rostratum on local vegetation composition and diversity

作　　者：寇紫倩 刘煜光[1] 彭伟秀[1] 马毅超 史宝胜[1] KOU Ziqian;LIU Yuguang;PENG Weixiu;MA Yichao;SHI Baosheng(College of Landscape Architecture and Tourism,Hebei Agricultural University,Baoding 071000,China)

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000

出　　处：《林业与生态科学》2022年第4期466-472,共7页Forestry and Ecological Sciences

基　　金：国家林业与草原局项目(KJZXSA2018005,KJZXSA2019003,KJZXSA202004);乡村振兴技术创新专项(22326511D)。

摘　　要：为研究外来植物刺萼龙葵对入侵地植被多样性的影响,调查了河北省张家口市宣化区刺萼龙葵的3个不同生境(人工国槐林、河滩、荒坡)的植被,分析物种组成、植被多样性、植被重要值等指标。结果表明,无论哪种生境,刺萼龙葵的多度、频度、盖度与重要值均远远高于其他植物,刺萼龙葵在其入侵区内已经成为优势种;与对照样地相比,刺萼龙葵的生长引起30.00%以上的本土植物在入侵区消失,改变了植被组成和多样性;而原本优势的本土植物,相对多度与盖度也明显降低,其中狗尾草的降幅最大,相对多度和相对盖度分别降低了2.5倍和2.7倍。本研究为全面理解刺萼龙葵的入侵生态风险提供了依据。In order to evaluate the impact of the alien plant Solanum rostratum on the vegetation diversity of the invasive land,the vegetation composition within three different habitats were investigated in Xuanhua District,Zhangjiakou City,Hebei Province,such as vegetation on artificial Chinese sophorae forest,beach land,and slopes.Species composition,vegetation diversity,vegetation importance value and other indicators were analyzed.The results showed that the abundance,frequency,coverage,and importance value(IV)of S.rostratum were much higher than that of other plants in the three habitats.The S.rostratum had become a dominant species in its invasion area.Compared with the control plot,the growth of S.rostratum caused more than 30.00%of native plants to disappear in the invasion area,which changed the composition and diversity of vegetation.The relative abundance and coverage of the native plants with original advantages were also greatly reduced.Among them,the Setaria viridis had the largest decrease,and the relative abundance and relative coverage were reduced by 2.5 times and 2.7 times,respectively.The results provided a certain theoretical basis for understanding of the ecological risk of exotic plant S.rostratum.

关 键 词：刺萼龙葵 入侵植物 植被组成 植物多样性 

分 类 号：S459[农业科学—植物保护]