Estimation of Potential Suitable Distribution Areas and Ecological Characteristics of Diodia virginiana L.in China
Diodia virginiana L.is a highly reproductive broad-leaved weed distributed in North America and Asia,yet its suitability region in China remains unclear.This study utilized the R language kuenm package to optimize the MaxEnt parameters,with ArcGIS software used for mapping and classification of suitability levels.The accuracy of the Maxent model prediction was evaluated based on the Receiver Operating Characteristic Curve.We selected dominant environment variables that affect the distribution of Diodia virginiana through the knife cut test,environmental variable modeling contribution rate,and permutation importance value analysis.We calculated the fitness threshold for dominant environment variables based on the response curve.Optimal model parameters(DeltaAICc=0,AUC=0.909,Omission rate at 5%=0.0497)were selected for modeling.Results indicate a total potential suitable area of 955700 km2 for Diodia virginiana growth in China,accounting for approximately 9.96%of the total land area,with concentrations in the low hills and plains region of Southeast China.Considering its strong adaptability,reproductive ability,and economic importance,increased attention to this weed is warranted.Moreover,the predictions offer valuable insights for relevant departments to formulate quarantine and control measures.
Diodia virginiana L.pest risk analysisprediction of suitable distribution areasMaxEnt model
NETL
NSTL
万方数据
