Abstract:The phenomenon of transference of grazing space is universal in a number of ecosystems. People had been aware of and had extensively investigated it in the past decades. Ecotone between agriculture and animal husbandry in the Songnen Plain, northeast china, bears many of heterogeneous landscapes, such as typical grassland, protective plantation, and farmland. The mosaic distribution of these kinds of landscape reduces the area of typical grassland, leading to evident or obvious to some extent spatial transf...