About the Authors

Dongmei Wang

Affiliation College of Forestry, Northwest A & F University, Yangling, Shaanxi, China

Fengyuan He

Affiliation College of Forestry, Northwest A & F University, Yangling, Shaanxi, China

Zhenjiang Lv

Affiliation College of Forestry, Northwest A & F University, Yangling, Shaanxi, China

Dengwu Li

dengwuli@163.com

Affiliation College of Forestry, Northwest A & F University, Yangling, Shaanxi, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DMW DWL. Performed the experiments: DMW ZJL FYH. Analyzed the data: DMW FYH ZJL. Wrote the paper: DMW FYH ZJL.