Wang Ziwen

                                                               College of Life Sciences，Liaoning University

                                              Yin Jin ，Wang Xing，Chen Yue，Mao Zikun， Lin Fei，Gong Zongqiang，Wang Xugao

                            CAS Key Laboratory of Forest Ecology and Management，Institute of Applied Ecology，Chinese Academy of Sciences

Abstract: As a major invasive plant in Liaoning Province,  Datura stramonium is difficult to remove after successful invasion, and poses a great threat to the local ecological environment and biodiversity. In order to evaluate the habitat adaptability of  Datura stramonium in Liaoning Province, we collected the geographical distribution data of  Datura stramonium in Liaoning Province by means of field investigation and database query. Biomod2 combined model was used to study the potential suitable distribution area of  Datura stramonium under current and future climate scenarios and its main environmental impact variables. The results show that the combined model, which consists of generalized linear model (GLM), generalized enhanced regression model (GBM), random forest model (RF) and maximum entropy model (MaxEnt), has a good simulation effect. The suitable areas of  Datura stramonium were divided into high, middle, low and unsuitable areas. The suitable areas were mainly distributed in the northwest and south of Liaoning Province, covering an area of about 38,100 km2, accounting for 25.8% of the total area of the province. The middle suitable area is mainly distributed in the northwest and central part of Liaoning Province, with an area of about 41,900 km2, accounting for 28.3% of the total area of the province. The slope and soil surface clay content (0-30 cm) had the greatest influence on the habitat suitability of  Datura stramonium, and the suitability of  Datura stramonium first increased and then decreased with the increase of slope and soil surface clay content. Under different climate change scenarios in the future, the total suitability of Datura showed an expanding trend, and the suitability increased significantly in Jinzhou, Panjin, Huludao, Dandong and other places.

Read the full article here:     【气候变化】辽宁省入侵植物曼陀罗的生境...基于Biomod2组合模型.pdf