Invasion Risk Assessment of Verbena bonariensis L.Based on Three Invasive Plant Risk Assessment Systems
Verbena bonariensis L.is a tall plant with large seeds,diverse reproduction methods and strong drought resistance,and large escaped plants appear after the introduction of green space in urban parks.Its potential to evolve into an out-of-control invasive alien plant similar to Solidago canadensis L has not been reported.In this paper,we conducted the first invasion risk assessment of Verbena bonariensis L through field survey,plant trait dissection,and based on three herbaceous plant invasion risk assessment systems,which is conducive to the early monitoring,early warning and prevention of the invasive plant.Through literature review and fieldwork,three alien species risk assessment indicator systems were used,they are NY/T 3669-2020 Technical specification of safety assessment for alien herbaceous plant,Five-step Assessment Method for Weed Risk of Invasive Alien Plants,and NY/T 1851-2010 Rules for risk assessment of introducing alien herbaceous plants.The risk assessment of Verbena bonadariensis L.was conducted separately,and the invasive plants Solidago canadensis L.and Solanum lycopersicum L.were used as controls.Among the 3 risk assessment criteria,NY/T 3669-2020 Technical specification of safety assessment for alien herbaceous plant assesses Verbena bonariensis L.a risk value of R=69.1,which means that its introduction is strictly prohibited.The risk value of Verbena bonariensis L.is R=47.5 by Five-order Assessment Method for the Risk of Invasive Alien Plant system,which means that the purpose,area,quantity and frequency of introduction must be strictly limited.The risk value of Verbena bonariensis L.in the NY/T 1851-2010 Rules for risk assessment of introducing alien herbaceous plants is R=1.07,with a medium risk level,which needs to be added to the assessment or deferred from the introduction.The invasiveness of Verbena bonariensis L was assessed by 3 evaluation criteria,all indicated that it has a high risk of invasion and should be monitored and managed to prevent it from evolving into a pernicious invasive weed.
Verbena bonariensis L.Biological invasionRisk assessmentMonitoring and management
NETL
NSTL
万方数据
