Examine the Distribution of Vegetation North East Semnan Using Landscape Metrics

Knowledge of the recent changes as an essential component of global environmental changes and sustainable part of the study emerged. The destruction of landscape, vegetation and land use changes and land cover change are those who constantly exert pressure on the country's environment. Land use change is a complex process and dynamic that natural and human systems linked together and make a direct impact on soil, water and atmosphere. The aim of this study was to investigate the possibility of using indicators of ecological landscape in the separation of land and plant communities in the study area is in the North East Semnan. To this end, there is need to the morphology of the land and vegetation maps. In this study, six metrics at class level and one metric at landscape-level for the study area were measured. These metrics using Patch analyst extension in ArcGIS was calculated. Then, using PCA important measures for separation plant communities were determined. Principal component analysis to determine the most important metrics in the resolution of the morphology map of land classes showed edge density, number of patches and mean patch size are the most important metrics, and in separate classes plant communities of this area the class area proportion, number of patches and mean patch fractal dimension are the most important metrics