About the Authors

Feng Chen

feng653@163.com

Affiliation Key Laboratory of Tree-Ring Physical and Chemical Research of China Meteorological Administration/Xinjiang Laboratory of Tree-Ring Ecology, Institute of Desert Meteorology, China Meteorological Administration, Urumqi, Xinjiang, China

Yujiang Yuan

Affiliation Key Laboratory of Tree-Ring Physical and Chemical Research of China Meteorological Administration/Xinjiang Laboratory of Tree-Ring Ecology, Institute of Desert Meteorology, China Meteorological Administration, Urumqi, Xinjiang, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FC YY. Performed the experiments: FC. Analyzed the data: FC YY. Contributed reagents/materials/analysis tools: FC. Contributed to the writing of the manuscript: FC.