It has been yearly observed by the public schools of the state, and no state has done more than Nebraska for the forestation of its waste and prairie lands.
In the sand-hills the sand-bar willow of the rivers and the cottonwood growing naturally, evidence the good conditions of moisture; and the forestation of much of the region is undoubtedly possible.
An end to mass conifer forestation on traditional hill farms.
This is due to the forestation of the hillsides reducing the area of habitat dominated by the laurel.
In the sphere of living environment, the varied evolution of plant life, the periods of forestation and deforestation, the introduction of deleterious plants simultaneously with harsh conditions of life and enforced migration, as well as of mechanically dangerous plants, are among the well-ascertained causes of diminution and extinction.