Preliminary Probe on Origin and Evolution of Lawn and Turf and Its Conception

The evolution of lawn and turf can be summarized as natural lawn and turf→ technical lawn and turf→ current lawn and turf . The original of lawn and turf can be explained as the coordinate evolution with the earth history: the climate, soil, grass, some animals especially the horse, the sheep, and the men's work in the world. The conception of lawn and turf canbe defined as one type of the grassland.