1. Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637001, China
2. Liziping Giant Panda’s Ecology and Conservation Observation and Research Station of Sichuan Province, China West Normal University, Nanchong 637001, China
3. Sichuan Lushi Expressway Co., Ltd., Chengdu 610041, China
4. Chengdu Normal University, Chengdu 611130, China