Land Use/Land Cover map provides the details of land utilized by human beings and land covered by natural features. Land Use/Land Cover is the basic information required for any project. Land Use/Land Cover change detection based on Remote Sensing data has been established as an indispensable tool for providing suitable and wide range of information to various decision support systems for natural resource management and sustainable development. Remote Sensing data and techniques combined with other data sources such as census information can be used to provide spatially explicit information over large geographical regions. Using Geo-spatial technology, Accrete Geo facilitate in providing accurate and timely information describing the nature and extent of land resources and changes over time from gradually expanding villages to rapidly growing metropolitan areas to map and monitor land cover changes using multi-temporal data. Geographic Information System and Remote Sensing data is used for mapping changes at regional scales essential for a wide range of applications including landslide, erosion, land planning, Global warming etc.
DEM a Digital Elevation Model is a regular array of elevation points. DEM analysis plays a vital role in many Civil Engineering and Environmental Engineering applications. Applications involving DEM are Watershed delineation, Viewshed analysis, Gradient analysis, Landscape topography or relief, hydrological modeling and engineering works such as cut and fill of earth. Shaded relief mapping obtained from DEM facilitates in illustrating topography and provide a 3D perspective of the landscape. Slope maps could be created from DEM which contains both horizontal and vertical information. DEM is utilized for slope characteristics analysis of land management units. One of the slope characteristics information’s practical applications is impact analysis of large rainfall events in an area.