Spatial distribution pattern of Tragopan temminckii in Xiaozhaizigou National Nature Reserve,Sichuan Province
Scientific understanding of the spatial distribution characteristics and influencing factors of wild animals is of great significance for the fine conservation of species.Temminck's Tragopan(Tragopan temminckii)is a national second-class key protected wild animal and a unique bird species in China,within high protection status and scientific research value.From May 2019 to August 2022,infrared cameras were deployed in Xiaozhaizigou National Nature Reserve and its surrounding areas according to the kilometer grid method,in order to use the monitoring data to evaluate the spatial distribution pattern of T.temminckii.A total of 320 active camera monitoring sites were studied,covering 197 km grid,with a total of about 95,600 active camera working days.During the study period,a total of 77 km grid were used to capture the moving images of T.temminckii,and a total of 608 times were recorded independently and effectively.The results showed that the grid occupation rate of T.temminckii was 39.09%,and there were distribution and cluster activities in different functional areas and the number of clusters was(2-3).The average detection rate was 0.12,and the average occupancy rate was 0.13.The occupancy rate decreased with the increase of the distance from the settlement(β=-0.287,SE=0.283),but increased with the increase of NDVI(β=0.057,SE=0.179),and the detection rate increased with the increase of NDVI(β=0.023,SE=0.109)and elevation(β=0.016,SE=0.096).The distribution of T.temminckii was recorded in 6 vegetation types,and the highest capture rate was recorded in deciduous broad-leaved forest(1.00)and mixed evergreen and deciduous broad-leaved forest(0.60).The distribution altitude of T.temminckii in the reserve ranged from 1518 to 3 543 m,with the highest shooting rate(1.14)at the altitude of 1 518 to 2 000 m.Based on the analysis results,ArcGIS software was used to draw the independent and effective record distribution map,single grid cluster distribution map and territorial distribution map of the whole kilometer grid in Xiaozhaizigou National Nature Reserve simultaneously,which visually demonstrated the specific distribution of species and also helped the fine protection and management of species.
Xiaozhaizigou National Nature ReserveTragopan temminckiiinfrared cameraspatial distribution patternoccupancy modeldistribution map
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