The Activity Rhythm Survey of Ungulates in Baishuihe National Nature Reserve Based on Infrared Camera Trapping

From June 2017 to September 2018, an infrared camera-trapping survey was used to study the activity rhythm of ungulate species in Baishuihe National Nature Reserve, Sichuan. The results showed that: (1) Six ungulates species were found in the nature reserve, namely Budorcas taxicolor, Naemorhedus goral, Capricornis sumatraensis, Moschus berezovskii, Elaphodus cephalophus and Sus scrofa. Relative abundance analysis results showed that the highest were Naemorhedus goral (RAI=42.9) and Elaphodus cephalophus (RAI=32.6), which were significantly higher than other species. The rest were Moschus berezovskii (RAI=13.2), Capricornis sumatraensis (RAI=4.8), Budorcas taxicolor (RAI=3.8), and the least was Sus scrofa (RAI=2.7).(2) On the annual activity pattern, Naemorhedus goral was similar to Elaphodus cephalophus, Budorcas taxicolor was similar to Sus scrofa, and Moschus berezovskii deer had the strongest activity in May, and Capricornis sumatraensis had the strongest activity in August. (3) The daily activity rhythms of the 6 ungulates showed that the daily activity rhythms of Naemorhedus goral and Elaphodus cephalophus were relatively similar, with the peak time of activity at 6:00–10:00 and 18:00–20:00. The activity peak time of Moschus berezovskii appeared at 20:00–22:00; Capricornis sumatraensis appeared at 6:00–8:00; Budorcas taxicolor appeared at 8:00–10:00; Sus scrofa appeared from 14:00 to 16:00. The activity rhythms of the 6 ungulates changed with the change of seasons. (4) According to the nocturnal behavior survey, among all six animal species, Moschus berezovskii was a typical nocturnal animal, Elaphodus cephalophus was not obvious, and Budorcas taxicolor, Naemorhedus goral, Capricornis sumatraensis, Sus scrofa had no obvious nocturnal behavior.