Potential Distribution and Its Influencing Factors of Eichhornia crassipes in the Plateau Water System in Luliang of Yunnan
The distribution of Eichhornia crassipes in the water system of Yunnan Plateau seriously affects the effectiveness of river improvement measures in Luliang County.In this study,the maximum entropy model MaxEnt and Arc-GIS software were used to study the community distribution of Eichhornia crassipes in river wetlands,analyze the dominant environmental factors affecting the growth distribution of Eichhornia crassipes,and analyze the effects of characteristic parameters on the potential distribution and ecological niche of Eichhornia crassipes.The results show that the AUC values of the training set and the validation set are 0.965 and 0.994,respectively,and the model predicts well.It is mainly distributed in the middle and lower reaches of the basin,and the area of high suitability area is 24.41 km2.Precipitation in the warmest season,soil fertility potassium content maintained by vegetation,precipitation variation coefficient,and altitude had great effects on the distribution of Eichhornia crassipes.The results provide a scientific basis for the treatment of river wetland in the plateau area of Luliang County,Yunnan Province.
万方数据
维普
