1School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
2Yanchi Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
3Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
4Department of Geology and Geophysics, Texas A&M University, College Station, TX, 77843, USA
5Inner Mongolia Low Coverage Company, Hohhot, 010000, China
6Xilingol Vocational College, Xilinhot, 026000, China
7Desert Forestry Experimental Center, Chinese Academy of Forestry, Dengkou, 015200, China