Analysis Of Mammal Species Diversity In Hunan Badagong Mountain National Nature Reserve Based On Infrared Camera

Badagong Mountain Reserve is the first national nature reserve established in Hunan Province.In order to ascertain the animal diversity,activity rhythm,distribution characteristics and resource status in this area,In order to ascertain the animal diversity,activity rhythm,distribution characteristics and resource status in this area,the author put 120 infrared cameras in the Badagong Mountain Nature Reserve for monitoring from 2018 to 2020.Analyzing the relative abundance,species diversity,activity rhythm and difference of different species in the area,grasp the time frequency of animal activities,and slow down the human activities in the period of frequent animal activities.It provides background data for the research and management of wild mammals in the reserve,and it is expected to provide an important basis for the protection of biodiversity in the reserve,the restoration of rare and endangered species populations,and habitat management.The results of the study are as follows:(1)In this study,a total of 48 393 camera working days were obtained,and 3953 independent valid photos of beasts were obtained.A total of 23 species of mammals,4 orders,11 families.Among them,the Moschus berezovskii is the key protected wildlife at the national level I.Ursus thibetanus,Prionodon pardicolor,Capricornis milneedwardsii,Naemorhedus griseus,Macaca mulatta,Elaphodus cephalophus and Prionailurus bengalensis are the key protected wildlife at the national level ?.(2)Dremomys pyrrhomerus,Sus scrofa,Elaphodus cephalophus,Paguma larvata,Prionailurus bengalensis,Arctonyx Collis,Melogale moschata and dremumys pernyi are the top eight species at relative abundance index list.The temporal niche breadth of Ursus thibetanus and Prionailurus bengalensis was the widest in summer,while that of Arctonyx collaris,Melogale moschata,Paguma larvatat,Dremomys pyrrhomerus,Dremomys pernyi,Elaphodus cephalophus and Sus scrofa was the widest in autumn.(3)The spatiotemporal pattern of mammal species diversity in Badagong Mountain Nature Reserve is obvious,there are significant differences in the species diversity of mammals at different altitudes and in different functional areas;there is no significant difference in the number of species in different seasons,and there are significant differences in other indexes.The species diversity of beasts shows a "single peak" curve that first increases and then decreases due to the elevation.The species diversity of beasts is the most abundant when the altitude is 1200m?1400m.The diversity of mammals is the most abundant in the buffer zone and the lowest in the experimental area.(4)The use of different habitats by mammals is significantly different,and they prefer evergreen and deciduous broad-leaved mixed forests.However,there is no difference in habitat selection among Dremomys pyrrhomerus,Sus scrofa,Elaphodus cephalophus and Paguma larvata.14 species of beasts including Prionailurus bengalensist,Callosciurus erythraeus,Ursus thibetanus,Paguma larvata,Petaurista alborufus and Dremomys pyrrhomerus were jointly photographed at Tianping Mountain,Shamujie area,and Doupeng Mountain,it shows that these 14 species of beasts are distributed throughout the reserve.(5)The daily activity rhythms are significant different between Dremomys pyrrhomerus,Sus scrofa,Elaphodus cephalophus and Paguma larvata in different seasons.The usage of time in summer and autumn is sufficient,and the activity intensity is strong,which obviously decreases in spring and winter,the class is less active or inactive.The daily activity rhythms of Dremomys pyrrhomerus,Sus scrofa,Elaphodus cephalophus and Paguma larvata at 7 different altitude gradient are significantly different.Through this monitoring,we have basically grasped the status quo of animal resources in the Badagong Mountain Nature Reserve,and provided basic data for local biodiversity conservation,population restoration of rare and endangered species,and habitat management.