Potential geographical distribution of asthma plant Euphorbia hirta based on MaxEnt under predicted future climate conditions
To predict the potential geographical distribution of an alien invasive weed Euphorbia hirta Linn.in China,the suitable areas under historical and future climate conditions were predicted based on the MaxEnt model and ArcGIS software.The Jackknife method was used to analyze the influence of various environmental factors on the suitable establishment areas for E.hirta.The results showed that in the process of changes in the potential geographical distribution of E.hirta,the environmental factor with the greatest influence was the precipitation of the wettest quarter,followed by the mean tempera-ture of warmest quarter.Under historical climate conditions,the potential geographical distribution ar-eas of E.hirta in China accounts for 32.45％of total land area,of which the highly suitable area ac-counts for 13.57％,the moderately suitable area accounts for 10.06％,and the slightly suitable area ac-counts for 8.82％.Based on future climate conditions,prediction results indicated that the suitable areas of E.hirta will further expand in 2050.The total area of potential distribution of E.hirta under SSP585 scenario was higher than that under SSP126 scenario,while the areas of highly suitable area of E.hirta under SSP126 scenario was higher than that under SSP585 scenario.This indicates that the potentially suitable habitat area of E.hirta in China is relatively wide,and it may further spread to the whole country in the future.It is recommended that relevant departments strengthen monitoring to prevent further inva-sion and spread of E.hirta.
Euphorbia hirtamaximum entropy modelpotential geographical distributioninvasive plant
NETL
NSTL
万方数据
维普
