Data source
The spatial distribution data for evaluation were downloaded via the IUCN website (https://www.iucnredlist.org/). To produce a suitable habitat distribution map (SDM), we utilized MaxENT (v.2.0). All takin occurrence data were collected from two sources: data prior to 2015 were from the National Giant Panda Survey (Forestry Department of Sichuan Province, 2015), and data from 2015 to 2020 were provided from Forestry department of Sichuan and collected during ongoing biodiversity monitoring surveys in each giant panda nature reserve in Sichuan. Monitoring of the giant panda nature reserves was routine work performed by local authorities and under the oversight of provincial and national management plans. The surveys focus on giant pandas and their sympatric species, and are typically conducted seasonally or every six months, using an existing network of transects (Gu et al. 2003; Zheng et al.,2012). More details about the giant panda surveys are found in the related reports (Forestry Department of Sichuan Province,2015).
Table 1 Data and source applied during evaluation and analysis