Effects of minimum mapping unit on land cover data spatial configuration and composition

摘要: A key issue when generating a land cover map from remotely sensed data is the selection of minimum mapping unit (MMU) to be employed, which determines extent detail contained in map. This study analyses effects MMU spatial configuration and composition, by using simulated landscape thematic patterns generated Modified Random Clusters method. approach allows detailed control different factors influencing metrics behaviour, as well taking into account wide range pattern possibilities. Land classes that are sparse fragmented can considerably misrepresented final increasing MMU, while occupy large percentage area tend become more dominant. Mean Patch Size Number Patches very poor indicators fragmentation this context. In contrast, Landscape Division (LD) related indices (Splitting Index Effective Mesh Size) clearly suitable for com...