Landscape Ecological Classification in Beijing Miyun Reservoir Catchment

Landscape ecological classification is the base for the study of its structure and functions as well as health condition.It is partial for many people devoted to this theme to emphasize either the heterogeneity or the properties of landscapes,since landscape ecological classification integrated both the spatial heterogeneity and the process relations.The forest landscape in Beijing Miyun reservoir catchment were classified based on remote image and digital topographical map under the working plat of ARC View and Fragstats,and some information of forest field survey and GPS locations were also used in this work.By this,some assessment of landscape health can be done aimed at each type.The forest landscape was merged into three types according to eco-economic requirements,which are named ecological-oriented forest landscape type,economic-oriented forest landscape type,eco-economic-oriented forest landscape type.The indexes of forest landscape diversity,evenness,dominance are 2.1636,0.6883 and 0.6826.The patch density is 0.1146 and the value of fractal dimension is 1.0476.These figures imply that the forest landscape in this region has been seriously disturbed by human beings,resulting in area fragments and regular shapes.The classification has made a good base for diagnosing and maintaining forest landscape health.