关键词: 植物分布； 太行花属； MaxEnt； ArcGIS, 适生分布区； 预测

Abstract: In order to clarify the introduction and propagation range of Taihangia, and find the appropriate threshold of environment factors for Taihangia growth,this paper based on MaxEnt model and ArcGIS geographic information system simulated the distribution of Taihangia in the current and future climate conditions.The results showed that the suitable areas of Taihangia were roughtly E112.8°—115.3°,N33.2°—37.8°,of which the high suitable area was 800 km² ,mainly distributed at the border of three provinces of Hebei, Henan and Shanxi.Precipitation was the main factor that dominated the distribution of Taihangia.The model had an AUC value of 0.996.The model fitted well and the prediction results had high credibility.We should pay close attention to high-suitability areas and carry out appropriate protection and breeding work based on this.In the future climate conditions,the suitable area of Taihangia will increase first and then decrease.It is suggested that relevant departments should take protective measures as soon as possible.

Key words: Plant distribution, Taihangia, MaxEnt, ArcGIS, Suitable distribution area, Prediction