Abstract
Ambrosia L. plant refers to one of the critical alien invasive species in Jilin Province, which can significantly jeopardize the environment. In this study, the MaxEnt model and the ArcGIS were combined to predict the potential intrusion areas of Ambrosia plant in Jilin Province. Subsequently, the dominant environmental factors affecting the geographical distribution of Ambrosia plant we’re determined. Next, the geographical distributions and ecological niche overlap degrees of two species of Ambrosia plant were analyzed. As revealed from the results, the total areas of Ambrosia artemisiifolia L. and Ambrosia trifida L. in potential high and middle suitable distribution areas of Jilin Province reached 11988.71km2 and 48039.68 km2, respectively. According to results, the environmental factors primarily affecting the distributions of Ambrosia artemisiifolia L. and Ambrosia trifida L. consisted of solar radiation (sard9) and annual mean temperature range (bio7) in September, as well as solar radiation (sard9) and isothermality in September (bio). Ambrosia plant was suggested to exhibit a high degree of ecological niche overlap and a large geographical distribution overlap. For the mentioned reason, this study laid a scientific basis for monitoring and controlling the spread of alien invasive species of Ambrosia plant in Jilin Province.
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