About the Authors

Wei Xue

Affiliation School of Nature Conservation, Beijing Forestry University, Beijing, China

Lin Huang

Affiliation School of Nature Conservation, Beijing Forestry University, Beijing, China

Bi-Cheng Dong

Affiliation School of Nature Conservation, Beijing Forestry University, Beijing, China

Ming-Xiang Zhang

zmx1972@126.com

Affiliation School of Nature Conservation, Beijing Forestry University, Beijing, China

Fei-Hai Yu

Affiliation School of Nature Conservation, Beijing Forestry University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WX MXZ FHY. Performed the experiments: WX LH. Analyzed the data: WX BCD FHY. Contributed reagents/materials/analysis tools: MXZ FHY. Wrote the paper: WX LH FHY.