“…However, historically, the main predators of C. e. alxaicus, the snow leopard, Uncia uncia (Schreber,1775); the gray wolf, Canis lupus Linnaeus, 1758; and lynx, Lynx lynx (Linnaeus, 1758), became extinct during the 1980s in the Helan mountain region (WANG & SCHALLER 1996). Numerous studies have demonstrated that deer behavior and habitat use are mostly influenced by humans (BORKOWSKI & UKALSKA 2008), including hunting, other human activities (LICOPPE 2006), travel routes JIANG et al (2007) reported that C. e. xanthopygus in northeastern China showed some behavioral plasticity in response to human influences, and the effect of habitat loss or fragmentation caused by human activities are expected to be great (JAEGER et al 2005). However, in the Helan Mountain region, we found that the deer neither preferred nor avoided human disturbance (p > 0.05) (Appendix 1), and they profited from the programs of ForestGrass Conservation Project and Shelterbelt Forestry Project and Returning Husbandry to Forestry (Grass) launched in 1996 (ZHAO et al 2000(ZHAO et al 2004, respectively.…”