The purpose of this chapter is to provide for safe, orderly, and beneficial development of districts characterized by diversity of physiographic conditions and significant natural features; to limit alteration of topography and reduce encroachment upon, or alteration of, any natural environment and; to provide for sensitive development in areas that are constrained by various natural features. Physiographic conditions and significant natural features can be considered to include, but are not limited to: slope of the land, natural drainage ways, wetlands, soil characteristics, potential landslide areas, natural and wildlife habitats, forested areas, significant trees, and significant natural vegetation.