1. College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, P. R. China
2. College of Science, Inner Mongolia Agricultural University, Hohhot 010018, P. R. China
3. Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, P. R. China
4. National Forestry Grassland Engineering Technology Research Center for Efficient Development and Utilization of Sandy Shrubs, Hohhot 010018, P. R. China
5. Department of Sustainable Biomaterials, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States