10 research outputs found

    Urban Green Space System Planning

    Get PDF

    Bartın İli örneğinde yeşil alanların ulaşılabilirliğinin değerlendirilmesi üzerine bir araştırma

    Get PDF
    Tasarım çözümleri iyi ve kolay ulaşılabilen parklar kentsel yaşam kalitesinin önemli bir parçasıdır. Ulaşılabilirliği kolay olan parklar kent insanının fiziksel aktivitesinin artmasına katkı sağlamaktadır. Bu çalışmada Bartın ili parkları alansal büyüklük, ulaşılabilirlik ve eğim yönünden incelenmiştir. Çalışmada Coğrafi Bilgi Sistemleri (CBS)’den yararlanılmıştır. Çalışmada Bartın ilindeki toplam 93 adet park değerlendirilmiştir. Araştırma kapsamında ele alınan parklar alansal büyüklükleri bakımından sınıflandırıldığında, ilde, semt parkı (1 adet), mahalle parkı (2 adet) ve çocuk bahçesi (1 adet) olarak tanımlanabilecek 3 farklı park büyüklüğü olduğu belirlenmiştir. Alansal büyüklük açısından tanımsız olan 89 adet park ise standart altı parklar olarak değerlendirilmiştir. Ulaşılabilirlik sınırı içerisindeki eğim grupları beş sınıfta (%0-4, %4-5, %5-8, %8-12 ve %1

    Evaluation of Public Green Areas Adequacy in the City of Çankırı for Accessibility

    No full text
    Kentsel yeşil alanlar ve bu alanların önemli bir bölümünü oluşturan kamusal yeşil alanlar, kentlerin rekreasyonel faaliyetleri için önemli alanlardır. Kamusal yeşil alan standardı “3194 Sayılı İmar Kanunu”nun “Plan Yapımına Ait Esaslara Dair Yönetmeliği”nde kişi başı 10 m2 aktif yeşil alan olarak belirlenmiştir. İlgili yönetmelikte kamusal yeşil alanların yeterliliği demografik yapıya bağlı olarak tanımlanmaktadır. Yeşil alanların kişi başına düşen m2 olarak ifade edilmesi bu alanların kullanılabilirliğine ilişkin değerlendirmelerin yapılmasına olanak sağlamamaktadır. Kent halkının rekreasyonel ihtiyaçlarını karşılayan kamusal yeşil alanların değerlendirilmesinde ulaşılabilirlik önemli bir kriterdir. Bu araştırmada Çankırı kenti kamusal yeşil alanlarının yeterliliği hem ilgili kanunda belirtilen standartlar çerçevesinde hem de ulaşılabilirlik açısından değerlendirilmiştir. Kentin yeşil alanları kanun kapsamında belirtilen standartları sağlarken, ulaşılabilirlik açısından standartları sağlamadığı görülmüştür. İdeal ulaşılabilirlik sınırları içerisinde, mevcut kamusal yeşil alanlara kentin % 20’i ulaşabilmektedir. İmar planında öngörülen kamusal yeşil alanlar ile bu oran % 75’e çıkmaktadır.Public green areas which are significant parts of urban green areas are important for urban recreational activities. The public green area standard is determined as 10 m² per capita as in the City Planning Law No. 3194. Adequacy of public green areas is defined in the specified law according to the demographic structure. Definition of green areas as per capita allows evaluating the spatial use of these areas. Accessibility is an important factor in evaluation of public green areas which meet the recreational demands of the urban people. In this study, adequacy of public green areas in Çankırı is evaluated with regard to both standards specified in the law and accessibility. The city meets the legal standards, however, does not meet the accessibility standards. 80 percent of the city people cannot access the current public green areas within the ideal accessibility boundaries. Public green areas predicted within the city development plan will be accessible by 75 percent of the city people

    A Change Vector Analysis Technique to Monitor Land-Use/Land-Cover in the Yildiz Mountains, Turkey

    No full text
    This paper presents the method to detect the intensity of change and the dimension of change using Change Vector Analysis (CVA) method. The aim of this study is to confirm the changes in the Yildiz Mountains using proof from natural ecosystems (natural deciduous forest, wetland and sand dune ecosystems) and other various ecosystems ecologically significant all over Europe and Turkey by using the CVA technique. Two Landsat TM scenes recorded in 1990 and 2009 were used to minimize change detection error introduced by seasonal differences. Images were geometrically and atmospherically corrected. As a result of the ratings, it is observed that agricultural areas decreased by 17.5 and Crimean pine forests by 16.4% whereas oak forests increased by 4.1%. Ash trees, sand dunes and bare ground reflected insignificant changes, too

    Temperature distribution and environmental impact of Tekirdag Ataturk Forest Nature Park

    No full text
    The term heat island describes built up areas that are hotter than nearby rural areas. The annual mean air temperature of a city with 1 million people or more can be 1.8-5.4 degrees F (1-3 degrees C) warmer than its surroundings. In the evening, the difference can be as high as 22 degrees F (12 degrees C). Heat islands can affect communities by increasing summertime peak energy demand, air conditioning costs, air pollution and greenhouse gas emissions, heat-related illness and mortality, and water quality (EPA, 2013). Urban heat islands are one of the most important problems of cities today and are experienced in Turkey similar to other cities in the world due to the spatial increase in urbanisation. It is known that the existence of green spaces has an important role in decreasing the negative effects of urban heat islands. The objective of this study is to determine the cooling effect of the Ataturk Forest Natural Park, which is 26.6 ha located in the city centre. Within this scope, mobile temperature values were taken at 41 points, 250 m apart, within the Ataturk Forest Natural Park and its surroundings. The result of the geostatistical analysis shows a temperature difference of up to 5.5 degrees C between the Ataturk Forest National Park and its surroundings. This difference can be effective over an approximately 400 m radius

    A Research On Evaluatıon Of Urban Street Trees in Cankırı

    No full text
    Bu çalışmada, Çankırı İli Atatürk Bulvarı’ndaki kent içi yol ağaçları, ağaççık ve çalılar incelenmiştir. Ağaçların mekan tanımlama, estetik uygunluk, fonksiyonel uygunluk ve sağlıklılık durumları değerlendirilmiştir. Atatürk Bulvarında bulunan ağaçların mekân tanımlama özelliğinin belirlenmesinde Coğrafi Bilgi Sistemleri (CBS)’nden yararlanılmıştır. Alanda yapılan gözlemler ve incelemeler sonucunda bitkilerin fonksiyonel uygunluk ve estetik uygunlukları, sağlıklılık durumları değerlendirilmiştir. Atatürk Bulvarındaki bitki materyali bulvarı kesen kavsak noktalarına göre 4 bölümde değerlendirilmiştir. Atatürk Bulvarında 24 farklı tür bitki kullanılmış olup, bu türlerin rasgele dikimi, tür dikiminde tasarım ilkeleri olan dizi, ritim, tekrara dikkat edilmemesi bitkisel tasarımın estetik yönden başarılı bir görünüm sergilemesini engellemiş, bitki materyali mekana bir kimlik kazandıramamıştır. Atatürk Bulvarı genelindeki tretuvar bitkilendirmesinde bitki materyali dağınık, fonksiyonellikten ve estetikten uzak bir görünüm sergilemektedir. Herdem yeşil, ağaç ve çalıların dağılımında da yine uygun olmayan bir dikim düzeni görülmektedir. Yine bütün bitki türlerinin dikiminde ideal taç genişlikleri dikkate alınmamıştır. Bitkiler arasındaki mesafe ideal taç genişliklerin den daha sık dikilmiştir. Çankırı ili Atatürk Bulvarı bitki materyalinin CBS ile belirlenmesi, bitkisel materyalin yönetiminde yerel yöneticilere önemli bilgiler sağlamaktadır. CBS ile bilgilerin plan ve haritalara koordinatlı olarak aktarılması bitki materyalinin mekana uygunluğu ve fonksiyonel uygunluğunun değerlendirilmesine olanak sağlamaktadır. Ayrıca bitkisel materyalin bakımı ve sürekliliğinin sağlanmasında da kolaylıklar sağlamaktadır.In this study, it was examined Atatürk boulevard's Street trees in Çankırı province. It was evaluated some properties (space identification, aesthetic suitability, functional suitability and healty status) of trees. Geographic Information Systems were used for space identification of Atatürk Boulevard’s trees. Functional suitability, aesthetics suitability and healthy of plants were evaluated as a result of field observations and studies. Plant material was evaluated by the four sections as an intersection points cutting of the Ataturk boulevard. It was used in 24 different species of plants on Ataturk boulevard. Plants were planted randomly. Some principles of planting design (series, rhythm, repetition) were not used. As a result of these were prevented to appearance aesthetically successful planting. Planting throughout Ataturk Boulevard appears nonfunctional and bad. Planting scheme of evergreen tree and evergreen shrubs also seems in appropriate. Again, the crown widths of all plant species are not considered ideal planting. Plants were planted more often than the distance between the ideal crown widths. Determination of plant material with GIS provinces of Atatürk Boulevard, the management of plant material provides important information to local authorities. Transferring of information plan and maps as coordinate with GIS maps allow the assessment of the suitability of plant material and functional suitability of the place. Also, ensuring continuity an d care of plant material was helped

    A Simplified Method for the Determination and Monitoring of Green Areas in Urban Parks Using Multispectral Vegetation Indices

    No full text
    In this article, a simple method to be used in determining and monitoring existing urban green areas was examined from an ecological point of view. To this end, Altinpark, which is located in the city of Ankara in Turkey, was studied as a pilot area. Normalised difference vegetation index (NDVI), soil adjusted vegetation index (SAW) and tasselled cap green vegetation index (GVI) values of Altinpark were used as ecological indicators. Vegetation cover size and temporal growing rates in the park area in Ankara were determined by employing Remote Sensing Technology. The results were assessed using Kappa statistics. Green area detection accuracies from NDVI, SAW and GVI were 71, 73 and 56%, respectively. Additionally, the 1989 and 2006 green areas of Altinpark were compared with each other to see the temporal growth of green cover in the park area. Green cover change was detected to be 43.9 ha

    Terrestrial Ecosystem Carbon Dynamics as Influenced by Land Use and Climate

    No full text
    Recent increases in atmospheric CO2 concentration and increased climate variations enforced us to improve our understanding of the terrestrial biosphere to improve human-ecosystem harmony in regard with processes and feedbacks that have functions in the earth system as a whole. Terrestrial ecosystems are principal components of the main carbon pools and land use has a decisive impact on these pools. Studies showed that converting forest and grasslands to farmlands and urban areas can result in considerable amount of carbon losses to atmosphere. However, emitted amounts may depend on the geographical region as well as type of vegetation cover of the converted areas. Recent studies showed that feedbacks between climate change and vegetation is more complicated than it was thought. Combined with these feedbacks, the land use changes may have an intricate impact on carbon exchange between atmosphere and biosphere. Studies showed that the consequences of changes in land use are beyond the expected in terms of ecosystem functioning and environmental quality. Complex interactions among climate, soil, plant productivity, and land management should be understood well to balance ecosystem functions and human welfare. In this literature review, we discussed interactions and feedbacks among terrestrial ecosystems and global carbon balance in regard with global climate change

    Oral Research Presentations

    No full text
    corecore