Acknowledgments
This research was supported in part by the U.S. National Science
Foundation through the Shale Hills Critical Zone Observatory grant
(EAR-0725019), the Taishan
Scholars Program (201812096) and
the National Natural Science Foundation of China (41977009). Fei Li was
supported by the Agricultural Science and Technology Innovation Program
of CAAS (CAAS-ASTIP-2020-IGR-04). Dr. Hill was partially supported by
the USDA National Institute of Food and Agriculture, Hatch project
1014496. Assistance in field data collections from the Penn State
Hydropedology Group was gratefully acknowledged.