A Simulation Study of the Geographical Distribution of Actinidia arguta in China

The aim of this study was to conduct an ecological regionalization and suitability evaluation of Actinidia arguta in China. The methods of maximum entropy have been deployed for some years to address the problem of species abundance distributions. In this approach, the ecological niche modeling software MaxEnt (the maximum entropy model), combined with ArcGIS (geographic information system), was applied to predict the potential geographic distribution of A. arguta in China. Bioclimatic dominant factors and the appropriate ranges of their values were also investigated. Our results showed that training data AUC (Area area under the ROC curve) of the 10 replicates was 0.992, which indicated a better forecast. The highly suitable area of A. arguta in China can be divided into three parts: the southwest, northeast, central and eastern regions. The moderately suitable areas are distributed around the most suitable areas, and the total area is 178.59x10(4) km(2), with a wider distribution than that of the most suitable areas. The important environmental factors affecting the distribution of A. arguta were Precipitation precipitation in July, temperature seasonality, altitude, mean temperature in April, and precipitation of the warmest quarter. The above results provide valuable references for wildlife tending, plantation regionalization, and standard cultivation of A. arguta.