how can plant prevent soil erosion give one way?

Answer 1

the roots of plants hold the soil together to prevent erosion

Answer 2

Any plant that kills the shallow-rooted grasses or community vegetation that sometimes carry down soil can worsen soil erosion. jap Knotweed (my specific foe) as an occasion, has a tendency to do no longer something approximately soil erosion for the duration of the wintry climate, and kills each little thing under it for the duration of the summer season.

Answer 3

Plants will hold soil through their root system. Fast spreading ground cover like Pachysandra is a good idea.

Also, as you may have seen in pictures of farming in hilly terrain, contour plowing helps reduce erosion through the use of terraces.