Conceptualization, H.W. and Y.W.; methodology, Y.W. and J.Z.; software, Y.W.; validation, Y.W.; formal analysis, Y.W.; investigation, J.Z.; resources, J.Z.; data curation, Y.W. and J.Z.; writing—original draft preparation, Y.W.; writing—review and editing, Y.W. and H.W.; visualization, Y.W. and J.Z.; supervision, H.W.; project administration, H.W.; funding acquisition, H.W. All authors have read and agreed to the published version of the manuscript. This research was supported by the National Natural Science Foundation of China (grant number 41471185), the Major Program of the Water Resources Science and Technology Project of Hunan Province (Xiangshuikeji [2017] 230-40) and Scientific Research Project of Hunan Provincial Education Department (19C0901).