Chengcheng Gang^1,2, Hanqin Tian², Shufen Pan², Hao Shi², Zhuonan Wang², Yuanzhi Yao², Zihao Bian², Naiqing Pan³ and Rongting Xu², (1)Northwest A&F University, Institute of Soil and Water Conservation, Yangling, China, (2)Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, AL, United States, (3)Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, United States