Species,occurrence trends,and risk assessment of poisonous weeds in the grassland ecosystem of Tengchong City
[Objective]This study was conducted to investigate the current status quo of poisonous weeds in the grasslands of Tengchong City,evaluated the present and future trends of harmful biological occurrences,and scientifically delineate the focal points for the prevention and control of poisonous weeds in the city's grasslands.[Method]The research team conducted field surveys and standard plot investigations in the grasslands of Tengchong City in April and October,2022,completing 29 survey routes and examining 59 standard plots for poisonous weeds.[Result]The survey identified 24 species of poisonous weeds from 15 families in the common grasslands of Tengchong City.Among them,Ageratina adenophora,Bidens pilosa,and Pteridium revolutum were dominant species,while Solanum aculeatissimum,Erigeron canadensis,and Argentina lineata were common species.The occurrence trends of these significant species were analyzed,and their suitable habitats in Tengchong City were modeled by using the MaxEnt maximum entropy model.The risk levels of A.adenophora and B.pilosa were identified as high,that of P.revolutum and E.canadensis as medium,and that of S.aculeatissimum and A.lineata as low.[Conclusion]A.adenophora and B.pilosa are widely distributed in Tengchong City and pose significant threats to local grasslands,necessitating strengthened management.The findings provide important guidance for the scientific prevention and control of poisonous weeds in Tengchong City's grasslands.
万方数据
维普
