Acknowledgements
Funding was provided by the State Key Research Development Program of
China (Grant No. 2016YFC0501803 and 2016YFC0501802), the Second Tibetan
Plateau Scientific Expedition and Research (Grant No.2019QZKK0405), and
the Open Project of the Qinghai Provincial Key Laboratory of Restoration
Ecology in Cold Area(2020-KF-05). We gratefully acknowledge the Beijing
Municipal Education Commission for their financial support through
Innovative Transdisciplinary Program ”Ecological Restoration
Engineering”.