广西植物2025，Vol.45Issue(11)：1974-1988,15.DOI:10.11931/guihaia.gxzw202405030
中国外来植物的物种组成、区系特征及影响因素分析
Species composition,floristic characteristics and influencing factors analysis of alien plants in China
摘要
Abstract
China is one of the countries most severely affected and imperiled by biological invasions.Mastering the species composition,floristic characteristics,and influencing factors of alien plants on a national scale is paramount to mitigating the risk of alien plant invasion and bolstering preventive measures.Based on"The Dataset of Alien Plants in China",this paper statistically analyzed the species composition,life form,floristic component,and so on.Furthermore,it employed correlation analysis and a stepwise regression model to deeply explore the association mechanism of alien plants from socio-economic indicators and ecological factors.The results were as follows:(1)The existing alien plants in China belonging to large families(99 families,encompassing 13 741 species)and large genera(205 genera,with 7 199 species)significantly contributed 93.41%and 48.94%to the total species number,respectively.Regarding life form composition,herbaceous plants dominated the alien plants in China,comprising 59.82%of the total species.(2)Nationally,tropical component families held a significant advantage,accounting for 52.647%of the total families,followed by temperate component families(21.553%)and cosmopolitan families(20.495%).(3)The distribution pattern of the total number of alien plants was consistent with that of their floristic components,that is,the total number of alien plants and their floristic components were most abundant in the eastern coastal and southwestern regions,gradually decreasing inland in China.Notably,cosmopolitan and temperate families were more prevalent in northern regions,whereas tropical families dominated southern regions.(4)Correlation analysis underscored a significant positive correlation between the number of alien species and the number of alien invasive species within the same family.Socio-economic factors and climate conditions of various provinces and cities jointly determined the spatial distribution pattern of alien plants and floristic component family numbers in China.However,the proportion of each floristic component was mainly influenced by heat conditions(annual average temperature).In conclusion,in the future,China should vigorously strengthen the introduction assessment and supervision of alien plants,particularly the herbaceous plants of large families and genera with tropical characteristics and cosmopolitan distributions.关键词
外来植物/区系成分/物种组成/植物多样性/分布格局Key words
alien plants/floristic component/species composition/plant diversity/distribution pattern分类
农业科技引用本文复制引用
张金梦,朱亮亮,印浩楠,王丽,刘玉莉..中国外来植物的物种组成、区系特征及影响因素分析[J].广西植物,2025,45(11):1974-1988,15.基金项目
江苏省高等学校基础科学(自然科学)研究项目(22KJD170003) （自然科学）
江苏省"双创博士"人才引进项目(JSSCBS20210378) （JSSCBS20210378）
湖州市自然科学资金项目(2022YZ33). （2022YZ33）
