Prediction of Potential Suitable Habitats of Cupressus funebris in Sichuan Province Based on MaxEnt Model
To reveal the potential distribution characteristics of Cupressus funebris in Sichuan province,this study used the coordinates of sample plots where C.funebris was the dominant tree species in the forest according to the first class inventory data of forest resources in 2012.Basically,the maximum entropy model(MaxEnt)was applied,combined with environmental factors such as climate,soil,and topography,to predict and analyze the potential suitable habitats for C.funebris in Sichuan province.The results showed that:(1)The average AUC value of the MaxEnt model was 0.916,indicating excellent prediction results for the geographical distribution of C.funebrisin Sichuan province.(2)The main ecological factors influencing the range of suitable habitats for C.funebris in Sichuan province were elevation,isothermality,and soil pH(0-30 cm),with a cumulative contribution rate of 87.1％.(3)The potential suitable habitats for C.funebris in Sichuan province were mainly located in the eastern part,with a total area of 117 180 km2,accounting for 24.24％of the total land area of Sichuan province.Among them,the high suitability habitat was mainly concentrated in the hilly areas of the Sichuan Basin,accounting for 14.12％of the total potential suitable habitats;the medium suitability habitat was mainly concentrated in the low mountainous areas around the basin and the parallel ridge-valley areas in the east of the basin,accounting for 42.22％;the low suitability habitat was mainly distributed in the low and middle mountainous areas around the basin,accounting for 43.67％.The results of this study can provide scientific basis and decision support for the zoning planning and sustainable management of C.funebris in Sichuan province.
Cupressus funebrisMaxEnt modelpotential suitable habitatsSichuan province
NETL
NSTL
万方数据
