Trend in Land Use/Land Cover Change Detection by RS and GIS Application

Knowledge of land use and land cover is important for many planning and management activities and considered as essential element for modeling and understanding the earth as a system. Land cover maps are presently being developed from local to national to global scales. The use of panchromatic, medium-scale aerial photographs to map land use has been as accepted practice since the 1940s. More recently, small-scale aerial photographs and satellite images have been utilized for land use/land cover mapping. Hydrologic modeling to estimate surface roughness or friction values, since it affects the velocity of the overland flow of water.