Conceptualization, W.J. and W.Y.; methodology, W.J.; software, W.J.; validation, W.J., W.Y. and L.Z.; formal analysis, W.J.; investigation, W.J.; resources, W.Y.; data curation, L.Z.; writing—original draft preparation, W.J.; writing—review and editing, W.J.; visualization, W.J.; supervision, W.J.; project administration, W.J.; funding acquisition, W.Y. All authors have read and agreed to the published version of the manuscript. This research was funded by Hunan Provincial Transportation Science and Technology Project. The project names are “Research on Key technologies of Road slope Ecological landscape restoration in ecologically fragile Areas” and “Research on microbial improvement of ecological protection technology for strongly weathered coal gangue slopes”, grant numbers are 201803 and 202212 respectively.
