生物安全学报（中英文）2026，Vol.35Issue(2)：161-171,11.DOI:10.3969/j.issn.2095-1787.20250068
中国南方水土流失区外来入侵植物风险评估
Risk assessment of invasive alien plants in erosion-prone areas in Changting County,Fujian Province
摘要
Abstract
[Aim]This study examines the distribution patterns and invasion risks of alien invasive plants after soil erosion control in Changting County,Fujian Province.It aimed to provide a scientific basis for the formulation of risk-based tiered monitoring strategies and targeted management measures.[Method]The line transect method was used for on-site investigations on the composition,habi-tat types,and invasion areas of introduced alien plant species.A risk assessment system for invasive alien plants in Changting Coun-ty was constructed,and the risk levels were graded.The distribution characteristics of the invasive plants with the highest risk level were analyzed.[Result]A total of 50 alien invasive plant species were recorded,belonging to 35 genera of 20 families.Herbaceous species predominated,with 48 species accounting for 96％of the total.Asteraceae had the highest representation,with 16 species(32％of the total),followed by Amaranthaceae with 6 species(12％of the total).Approximately 90％of the invasive species origi-nated from the Americas.The risk assessment results indicated that invasive alien plants in Changting County can be classified into five risk grades:extremely high risk(Grade Ⅰ,6 species),high risk(Grade Ⅱ,8 species),moderate risk(Grade Ⅲ,16 spe-cies),low risk(Grade Ⅳ,16 species),and extremely low risk(Grade Ⅴ,4 species).In Changting County,invasive species were mainly distributed along roadsides,with the highest species richness observed in the southern townships.Extremely high-risk alien plants were concentrated in the central and northeastern townships,with Xinqiao and Sanzhou towns exhibiting the highest o-verall invasion risk.[Conclusion]The invasive plants in Changting County are mainly members of Asteraceae,herbaceous plants,and species originated from the Americas.A new invasive plant,Erigeron sumatrensis,was also discovered.It is suggested that the dominant species of Asteraceae should be controlled by using native plants with similar ecological niches,and special attention should be paid to the areas with high road density and the boundaries of towns.关键词
外来入侵植物/水土流失/风险评估/入侵等级/长汀县Key words
alien invasive plants/soil and water erosion/risk assessment/invasion levels/Changting County引用本文复制引用
黄彦恺,冉诚渝,黎桐妍,苏子昂,林松昆,傅伟聪..中国南方水土流失区外来入侵植物风险评估[J].生物安全学报（中英文）,2026,35(2):161-171,11.基金项目
国家重点研发计划项目(2021YFE0193200) （2021YFE0193200）
