In Landscape Ecology,landscape means a cluster of interacting ecosystems which appear as spatial land mosaics.Therefore,the main point of Landscape Ecology is to study the spatial relationship of ecosystems,as well as the retention of landscape heterogeneity.The theory of Spatial Ecology is presented just for this purpose.This article expounded the main points of this theory:scale,spatial pattern,landscape heterogeneity,mosaics and ecotone,disturbance and landscape dynamics,etc.The Theory of Spatial Ecology...