Characteristics and applications of ecological soil substrate for rocky slope vegetation in cold and high-altitude areas.

Ecological restoration of steep rocky slopes generated by road cutting is usually difficult especially, in the cold and high-altitude environment, which is unfavorable for the growth of vegetation. With the focus on slope vegetation, an ecological soil substrate, synthesized with polyacrylamide (PAM), carboxymethyl cellulose (CMC), and Fly ash (FA) as the main components, was developed for spray seeding on the rocky slopes in cold and high-altitude regions, to provide a favorable environment for vegetation growth. The compositional effect of individual compound addition on the growth of vegetation and substrate properties was investigated using an orthogonal array experimental design.