Prediction of Potential Distribution of Phragmites australis in China Based on MaxEnt
With 338 data records and 6 environmental variables,this study adopted MaxEnt to predict the potential distribution of Phragmites australis in China.The contribution rate,permutation importance,jackknife test,and univariate response curve were employed to analyze the environmental variables affecting the distribution and the suitable distribution zones of P.australis.With the parameters of RM=1 and FC=LQHP,the MaxEnt model showed the area under the receiver operating characteristic curve of 0.909,which indicated high prediction accuracy.The potential distribution zones of P.australis in China mainly included Gansu,Shanxi,and Shaanxi,and the highly and moderately suitable distribution areas were 1.25×109 and 1.88×109 hm2,respectively.The main environmental variables affecting the geographical distribution of P.australis were annual mean temperature,precipitation of the wettest month,isothermality,precipitation of the coldest quarter,and annual mean temperature range.The distribution probability of P.australis was high when the annual mean temperature,precipitation of the wettest month,isothermality,precipitation of the coldest quarter,and annual mean temperature range were 14-22 ℃,108-284 mm,below 24,less than 50 mm,and within mean 28.5 ℃,respectively.
Phragmites australisMaxEntenvironmental factorpotential suitable distribution zone
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