Urban Landscape Change

738 Words3 Pages
Urbanization or landscape change causes surface and atmospheric changes (Voogt and Oke 2003). The physical processes of urban land-use change are most commonly described as either a change in the absolute area of urban space or the pace at which non-urban land is converted to urban uses (RAINIS 2003). There is need to emphasize upon the changes occurring in urban climate, hydrology, and biogeochemical cycles caused by modification of the landscape (Stefanov and Netzband 2005). The changing patterns of land use and the spreading and intensification of human activities have impact on water resources (Boegh, Poulsen et al. 2009), energy balance and local climate. The urbanisation is carried further by urban sprawl causing landscape change,…show more content…
Urban ecology integrates the theory and methods of both natural and social sciences to study the patterns and processes of urban ecosystems. . Land change to build cities and to support the demands of urban populations itself drives other types of environmental change. It is also at the regional scale that land-use changes driven by and resulting from population movement are most apparent. The “edge” of the city expands into surrounding rural land-scape, inducing changes in soils, built structures, markets, and informal human settlements, all of which exert pressure on fringe ecosystems. The best-documented example of anthropogenic climate modification is the urban heat island (UHI)…show more content…
Urban has broad applicability in remote sensing; few methods employed in urban using remote sensing and GIS tools are mentioned and discussed in following section. 3.3.2 Remote Sensing Methods Remote sensing offers new dimensions to the study of urban morphology. From the broad scale of distinguishing urban areas from their surroundings, to microscales within cities, characterizing biophysical properties with spaceborne and airborne sensors provides objective estimates of the composition and structure of cities and their environs. The digital format offers additional benefits, such as convenient scale conversion, aggregation and disaggregation, ready access to statistics and attributes, and ready integration with other digital geographic information system (GIS) data (Ridd 1995). 3.3.2.1 Land Use / Land Cover
Open Document