Acknowledgments
We thank Ting-Ting Shen, Yu-Xin Wang, Feng-Miao Zhao for continuously
collecting data in the field and for the laboratory analysis during the
study period. We thank the Key Laboratory of Grassland Resources of the
Ministry of Education (Inner Mongolia Agricultural University) for their
support, and also thank anonymous referees for their constructive
comments that significantly. This study was financially supported by
High-Level Talent Research Project of Inner Mongolia Agricultural
University (NDYB2020-5), National Natural Science Foundation of
China (32192463).