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Öğe Determination of impact of urbanization on agricultural land and wetland land use in Balçovas' Delta by remote sensing and GIS technique(2007) Bolca M.; Turkyilmaz B.; Kurucu Y.; Altinbas U.; Esetlili M.T.; Gulgun B.Because of their intense vegetation and the fact that they include areas of coastline, deltas situated in the vicinity of big cities are areas of greet attraction for people who wish to get away from in a crowded city. However, deltas, with their fertile soil and unique flora and fauna, need to be protected. In order for the use of such areas to be planned in a sustainable way by local authorities, there is a need for detailed data about these regions. In this study, the changes in land use of the Balçova Delta, which is to the immediate west of Turkey's third largest city Izmir, from 1957 up to the present day, were investigated. In the study, using aerial photographs taken in 1957, 1976 and 1995 and an IKONOS satellite image from the year 2005, the natural and cultural characteristics of the region and changes in the coastline were determined spatially. Through this study, which aimed to reveal the characteristics of the areas of land already lost as well as the types of land use in the Balçova delta and to determine geographically the remaining areas in need of protection, local authorities were provided with the required data support. Balçova consists of flat and fertile wetland with mainly citrus-fruit orchards and flower-producing green houses. The marsh and lagoon system situated in the coastal areas of the delta provides a habitat for wild life, in particular birds. In the Balçova Delta, which provides feeding and resting for migratory birds, freshwater sources are of vital importance for fauna and flora. The settlement area, which in 1957 was 182 ha, increased 11-fold up to the year 2005 when it reached 2,141 ha. On the other hand, great losses were determined in farming land, olive groves, forest and in the marsh and lagoon system. This unsystematic and rapid urbanization occurring in the study region is not only causing the loss of important agricultural land and wetland, but also lasting water and soil pollution. © Springer Science+Business Media B.V. 2006.Öğe A gis-based model for rating natural protection areas according to natural protection priorities(2007) Bahar T.; Kurucu Y.; Bolca M.; Altinbas U.; Esetlili T.; Gulgun B.; Ozen F.; Gencer G.; Guney A.; Hepcan S.; Ozden N.There has been a major urban shift of population in Turkey over the last century. Most people lived in rural areas until 1960, but now more than half live in urban areas. This trend has continued over the last 20 years, as families moved further away from city centres to find houses in the country, and this has caused land use to change rapidly. In decision-making studies to protect nature areas, rating and assessment of ecological data by scientific verification is difficult due to the huge volumeand diversity of data. Therefore, the search for the most suitable and applicable method to achieve physical planning based on ecological understanding has been sought. The necessity for numerous parameters to be taken into account has stimulated the use of geographic information systems (GIS). This study assesses the usefulness of a GIS-based model in the protected area of Kaynaklar County, to the south of the city of Izmir. Existing cultural and natural land-use types, as well as soil, hydrologic, geologic and geomorphologic data layers (future classes) were gathered from field observation and using Landsat and IKONOS satellite images, and transferred to a database according to GIS rules. Index values were determined by taking impact on attributes of natural protection as a priority and these were attached to each feature class. Layers of data were merged by spatial intersection methods and new polygons were created for both cultural and natural features. A three-grade final map of the study area was generated using total index values of each new polygon. © 2007 Taylor and Francis Group, LLC.Öğe Preservation of ornamental plant materials with glycerine(2004) Yildirim B.T.; Gulgun B.Glycerine (60 and 40%) solution was used for the preservation of ornamental plant materials including twigs, leaves and berries. Five different plant materials viz. leaves of Magnolia grandiflora, Aspidistra elatior, Fatsia japonica and branches of Mahonia aquifolium and Cotoneaster horizontalis were used. The materials were put into containers with glycerine in hot water (60 and 40% v/v). These containers were kept under light and dark conditions. For all the tested plant materials 60% glycerine and light condition yielded better results.Öğe Role of the landscape architecture in interdisciplinary planning of sustainable cities(Scibulcom Ltd., 2014) Gulgun B.; Guney M.A.; Aktas E.; Yazici K.Sustainable cities are ecologically planned and require obtaining, interpretation and using all the ecological data with ecological land planning principles which called urban landscape planning. Geological and geophysical data, climatic data with forecasting a long time, soil types, all biota including flora and fauna, recent and future population, land use types in urban site and surrounding regions, environmental pollution sources and relating works of environmental engineers are implements to use with ecological urban planning principles and methods. Particularly open and green areas of all kinds of urban space with selection of optimum ground structure, the square measure, the distance among them, selection of right trees, shrubs, vines, groundcover plants, hedges, perennials and annuals, geophytes, etc. secure viable cities by contribution of landscape architects to urban planning. Without ecological planning there is no possibility to reach sustainable city concept.
