[Zhang, Shuo-Xin; Zhang, Hua-Hai] Northwest A&F Univ, Coll Forestry, 3 Taicheng Rd, Yangling 712100, Shaanxi, Peoples R China.
[Liu, Zhao-Ying; Liu, Yan-Chun; Huang, Ya-Jun] Hunan Agr Univ, Coll Vet Med, Changsha 410128, Hunan, Peoples R China.
[Zhang, Shuo-Xin; Zhang, Hua-Hai] Qinling Natl Forest Ecosyst Res Stn, Ningshan 711600, Shaanxi, Peoples R China.
[Liu, Zhao-Ying] Hunan Agr Univ, Hunan Engn Technol Res Ctr Vet, Changsha 410128, Hunan, Peoples R China.
[Jiang, Xu-Yan] Northwest A&F Univ, Coll Landscape Architecture & Arts, 3 Taicheng Rd, Yangling 712100, Shaanxi, Peoples R China.