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Based on GIS technology , the use of the largest provider model ( Maxent ) to predict the the leucocephalus potential distribution , and consolidated historical distribution range , residential areas, farmland , roads and vegetation distribution distribution of information on the white-headed langur , through spatial analysis , evaluation bald langur potential distribution , and finally proposed protection measures . The main results are as follows: 1 TM satellite images , topographic maps and digital map -based information on the use of the evaluation of the best band , best band combination 542 . With no supervision classification, supervision and remote sensing image classification classification and decision trees in the study area . The results show that decision tree classifier as the optimal classification , the classification results : water area of ??966.15km to residents in an area of ??2971.38 km 2 , farmland area of ??3444.05 km 2 , vegetation area of ??9866.07 km 2 . 2 , the use of the MaxEnt model predicted the potential distribution of the white-headed langur , the results showed that : solar radiation ( radiation , 46.1 % ) , the wettest season precipitation ( bio16 , 19.2 % ) , the monthly mean temperature difference between day and night ( BiO2 , 9.8 % ) , River domain ( river , 7 % ) , the coldest month most low temperature ( bio6 is , 6.9 % ) and soil pH ( soilph , 4 % ) and other six major environmental factors , the cumulative contribution rate of 93%. The prediction results using the the AUC evaluation methods , its AUC value is 0.927 , which indicates that the result has a high reliability . 3 , using expertise model predicts the distribution of reclassification , divided into high - probability distribution ( 432.48 km 2 ) , suitable areas ( 941.38 km 2 ) and low-probability distribution ( 15873.79 km ) . 4 , the use of GIS technology and the white-headed langur habitat , the white-headed langur appropriate level of distribution , the most appropriate area of 112.60km to the appropriate area of ??78.92km 2 , should not be area of ??17056.13 km 2 , and propose appropriate protection measures .
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