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.