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    Monitoring land use changes in tourism centers with GIS: Uzungöl case study
    (2010) Atasoy, Mustafa
    In Turkey, highlands have been used as venues for livestock and summer recreation for many years. Today, however, they are subject to alternative tourism and recreation activities, which dramatically change the nature in these regions. Because of natural beauties, "Touristic Centers" for eco-tourism have started rapidly in these places for the last three decades. Uzungöl, which belongs to Çaykara district of the Trabzon province, is one of the first of these tourism centers. In this study, temporal and spatial land use changes of the Uzungöl tourism center that has a national and international importance were analyzed using aerial photographs and GIS. For this purpose, aerial photographs of 1973-2002, and base map of 2008 were examined to determine the dimensions of the construction in the region. The results of the analysis have shown that, the region has undergone a heavy construction in the last 35 years. A very significant increase in the number of buildings (91%), which is especially concentrated in a particular watershed protection area around the lake, has been identified. Results indicate that, Uzungöl is under an unplanned development period, which is away from the scope of eco-tourism wonderland sustainability and/or intervention with the general plan of construction work. © 2010 Academic Journals.
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    Remote sensing and GIS-based landslide susceptibility mapping using frequency ratio and analytical hierarchy methods in Rize province (NE Turkey)
    (Springer Nature, 2012) Reis, Selçuk; Atasoy, Mustafa; Nişancı, Recep; Bayrak, Temel; Erduran, Murat; Sancar, Cenap; Ekercin, Semih
    The northeast part of Turkey is prone to landslides because of the climatic conditions, as well as geologic and geomorphologic characteristics of the region. Especially, frequent landslides in the Rize province often result in significant damage to people and property. Therefore, in order to mitigate the damage from landslides and help the planners in selecting suitable locations for implementing development projects, especially in large areas, it is necessary to scientifically assess susceptible areas. In this study, the frequency ratio method and the analytical hierarchy process (AHP) were used to produce susceptibility maps. Especially, AHP gives best results because of allowing better structuring of various components, including both objective and subjective aspects and comparing them by a logical and thorough method, which involves a matrix-based pairwise comparison of the contribution of different factors for landslide. For this purpose, lithology, slope angle, slope aspect, land cover, distance to stream, drainage density, and distance to road were considered as landslide causal factors for the study area. The processing of multi-geodata sets was carried out in a raster GIS environment. Lithology was derived from the geological database and additional field studies; slope angle, slope aspect, distance to stream, distance to road and drainage density were invented from digital elevation models; land cover was produced from remote sensing imagery. In the end of study, the results of the analysis were verified using actual landslide location data. The validation results showed satisfactory agreement between the susceptibility map and the existing data on landslide locations.