Research Information System
BENA 2012 Conference, İstanbul, Turkey, 22 - 24 July 2012, vol.1, no.1, pp.935-946, (Full Text)
Istanbul is in a rapidly spatial changing process, because of the urbanization pressure caused by population increase. This change has sometimes very difficult effects on current ecosystems without conversion. Sarıyer is a district with heterogeneous structure, where suburbanization, corridor construction are seen as the main factors of change, and therefore was chosen as the sample area. In order to underline the ecological impact of changing and to bring suggestions for potential uses, spatial-temporal change was analysed with the help of adequate landscape metrics. Image processing techniques including supervised classification and unsupervised classification were used to classify the study area in four land use/land cover (LU/LC) categories (agricultural areas, artificial surfaces, forests and semi-natural areas and wetlands) via Landsat TM and ETM satellite images (1997-2000-2005-2010). The spatio-temporal change of this four classes were revealed by using the change detection method. The effect of spatial change on ecosystems was presented by the help of landscape metrcis. Especially spatial configuration metrics were used. It has been concluded from the interpretation of these metrics that, there is a firm reverse correlation between “Forest Lands and Semi-Natural Surfaces” class and “Artificial Surfaces” class, in terms of class area, that areal losses have occurred in time in the natural cover of the area, and that deteriorations and losses have occurred in the living environments. Patchs recede from being in order. It has further been ascertained that, losses occur in the central areas rich in bio-diversity. The expected results of this study are to express analytically the effects of change on ecosystems and thereby to bring suggestions within conservation – utilization balance and the sustainable landscape planning framework.