ACKNOWLEDGEMENTS
We sincerely thank the Key Laboratory of Subsurface Hydrology and
Ecological Effects in Arid Region, Ministry of Education. The authors
are grateful to the Editor and anonymous reviewers for their
constructive comments and suggestions. This research was funded by the
General Financial Grant from the China Post-doctoral Science Foundation
(2017M623088), Shaanxi Postdoctoral Science Foundation 2018, National
Natural Foundation of China (51679185) and the National Key R&D Program
of China (2018YFE0103800). APC was funded by the General Financial Grant
from the China Postdoctoral Science Foundation (2017M623088).