Study on the activity rhythms of six ungulate species along the planned Sichuan-Tibet Railway(from Kangding to Batang section)based on infrared cameras
Based on the construction needs of the Sichuan-Tibet Line,a major national project,in order to reduce the impact of road construction and operation on wildlife and protect biodiversity,from June 2019 to June 2021,the activity rhythms of 6 ungulates along the proposed Sichuan-Tibet Railway(Kangding to Batang section)was studied by using infrared camera technology.The results show that:1)Elaphodus cephalophus has the highest relative abundance among the six ungulate species,followed by Capricornis milneedwardsii,Rusa unicolor,Sus scrofa,Moschus chrysogaster and Naemorhedus gri-seus.2)The annual activity patterns of Elaphodus cephalophus and Capricornis milneedwardsii gazelle exhibit a high degree of similarity.The relative abundance is lowest from January to April,gradually in-creasing from May to June,reaching its peak in July,and then gradually decreasing afterwards.3)The diurnal activity patterns of Elaphodus cephalophus and Moschus chrysogaster are similar,both belonging to bimodal type,with obvious dawn and dusk habits;The daily activity patterns of Sus scrofa and Rusa unicolor are unimodal,and the activity curve of Rusa unicolor is U-shaped,and the trough appears at noon,which belongs to the special unimodal pattern.The activity regularity of Capricornis milneedward-sii and Naemorhedus griseus is not obvious.4)The diurnal activity rhythm of Elaphodus cephalophus and Sus scrofa in the dry season and the rainy season is significantly differentiated.5)Rusa unicolor and Moschus chrysogaster are typical nocturnal animals,Elaphodus cephalophus and Sus scrofa are typi-cal diurnal animals,and Naemorhedus griseus and Capricornis milneedwardsii do not have obvious diur-nal movement.
Sichuan-Tibet Railwayungulate speciesanimal rhythmsinfrared camera
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