Analyzing the pattern and connectivity of urban green spaces: A case study of Izmir, Turkey

Hepcan, Şerif

doi:10.1007/s11252-012-0271-2

Cited by 35 publications

(15 citation statements)

References 20 publications

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“…Landscape fragmentation metrics have been widely applied in studies using different quantitative representations to reveal the characteristics of urban spatial patterns. With a focus on spatial patterns, many of these studies have applied landscape metrics in combination with spatial-temporal gradient analysis to investigate fragmentation processes [5,[22][23][24] and dynamics [3,17,25]. In this study, we applied landscape fragmentation metrics to measure the extent of fragmentation of urban green spaces.…”

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confidence: 99%

Urban Green Space Fragmentation and Urbanization: A Spatiotemporal Perspective

Zheng

Wang

et al. 2019

Forests

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Urbanization leads to the occupation of green areas, directly contributing to a high level of fragmentation of urban green spaces, which, in turn, results in numerous socioeconomic and environmental problems. Consequently, an understanding of the relationships between patterns of urban green spaces and urbanization processes is essential. Although previous quantitative studies have examined this relationship, they have not included an exploration of spatial heterogeneities in the effects of urbanization on the spatial patterns of urban green areas. We therefore applied a spatiotemporal perspective to examine the above relationship, while considering the wider planning context. First, we quantified the extent of fragmentation of urban green spaces using landscape metrics comprising the largest patch index (LPI) and landscape shape index (LSI). Next, using the calculated spatial metrics and nighttime light data (NTL) for central Beijing for the period 1992–2016, we applied a geographically weighted regression model to assess variations in the spatiotemporal effects of urbanization on the fragmentation of urban green spaces. The results showed that urbanization initially occurred mainly in the northern parts of Beijing, whereas urbanization of southern urban fringe areas occurred after 2008. The reduction in green spaces along with increasing fragmentation and complex spatial patterns are indicative of issues relating to Beijing’s rapid urbanization and planning policies. This study contributes to an understanding of how urbanization influences fragmentation of urban green spaces and offers insights for the planning of urban green spaces from the perspective of promoting sustainability.

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confidence: 99%

Urban Green Space Fragmentation and Urbanization: A Spatiotemporal Perspective

Zheng

Wang

et al. 2019

Forests

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“…İzmir Büyükşehir genelinde olduğu gibi Bornova'da da kent parkları ilçenin oldukça küçük bir bölümünü kaplamaktadır (Hepcan 2013). Parklar, özellikle yapılaşmanın yoğun olduğu kentsel peyzajlarda biyolojik çeşitliliğin muhafaza edilmesinde çok önemlidir (Cornelis ve Hermy 2004).…”

Section: Tartışma Ve Sonuçunclassified

“…2008;Esbah ve ark. 2009;Hepcan 2013). Ekolojik ve rekreasyonel pek çok işlevi yerine getirirken, kentsel yaşam kalitesinin yükseltilmesine katkı yaparlar.…”

Section: Introductionunclassified

“…Ekolojik ve rekreasyonel pek çok işlevi yerine getirirken, kentsel yaşam kalitesinin yükseltilmesine katkı yaparlar. Ancak yeşil alanlar dünyanın pek çok kentinde olduğu gibi ülkemiz kentlerinde de kentin ve kentlinin ihtiyaçları ile doğal peyzaj bileşenlerinin bir arada düşünüldüğü bir yaklaşımla bir planlama ürünü olarak değil, genellikle rastlantısal olarak üretilmektedir (Hepcan ve ark 2006;Steiner 2011;Hepcan 2013). Peyzaj bilinci gelişmemiş ülkelerde açık-yeşil alanların işlevi çoğu zaman boş-artık alanların süslenmesinden öteye geçememektedir (Steiner 2011).…”

Section: Introductionunclassified

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Urban green infrastructure analysis: The case of Bornova

Hepcan

2018

Mediterranean Agricultural Sciences

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Bu araştırmada; Bornova kentsel peyzajı içindeki açık ve yeşil alanların strüktürünü ortaya koymak amacıyla, kentsel açık ve yeşil alan sisteminin bileşenleri olan doğal ve bitkilendirilmiş parça ve koridorlar, 2014 yılı arazi kullanım haritası kullanılarak tanımlanmıştır. Bu bileşenlerin strüktürü; sekiz adet peyzaj metriği (sınıf alanı (CA), parça sayısı (NP), peyzajın oranı (PLAND), Peyzaj şekil indeksi (LSI), ortalama parça büyüklüğü (AREA_MN), yakınlık indeksi (PROX_AM), süreklilik indeksi (GYRATE_AM), mesafe indeksi (ENN_AM)) kullanılarak analiz edilmiştir. Araştırmada, kentsel açık ve yeşil alan sistemi oluşturma potansiyeline sahip parça ve koridorların kentsel gelişme alanı içindeki oranının % 45 (% 43 parça, % 2 koridor) olduğu belirlenmiştir. Sonuçlar ayrıca kentsel gelişme alanı içinde düzensiz dağılım gösteren parça ve koridorların büyük ölçüde doğal karakterli olduğunu, aralarındaki mesafelerin fazla ve peyzajdaki sürekliliğinin düşük olduğu göstermiştir. Araştırma sonuçları; kentte bir yeşil alt yapı sisteminin bulunmadığını, niceliksel açıdan açık ve yeşil alanların kentsel peyzaj içindeki durumunun yeterli olmadığı, ancak kentin içinde olmasa da çeperlerinde gelecekte yeşil altyapı sistemi oluşturmak için uygun olarak kullanılması halinde kent ekosistemine daha çok katkı sağlayabilecek önemli yeşil alanlar bulunduğunu ortaya koymuştur. Anahtar Kelimeler:Kentsel açık yeşil alan Peyzaj metrikleri Bornova ARTICLE INFO ABSTRACTReceived 17 July 2017 Received in revised form 12 December 2017 Accepted 08 January 2018In this study, natural and artificial patches and corridors as the elements of the urban green areas system were identified using land use map of the year of 2014 in order to reveal the structure of open and green spaces in the Bornova district. The structure of aforementioned elements of the open and green space system was analyzed using eight landscape metrics, which are Class Area (CA), Number of Patches (NP), Proportion of Landscape (PLAND), Landscape Shape Index (LSI), Mean Patch Size (AREA_MN), Mean Proximity index (PROX_AM), Radius of Gyration (GYRATE_AM) and Nearest Neighbor Distance (ENN_AM). It was determined that the ratio of potential elements of the open and green space system, patches and corridors in the urban development area was 45% (43% patch, 2% corridor) in total. Moreover, patches and corridors with predominantly natural character were randomly scattered throughout the urban landscape and showed a very low continuity. In conclusion, there was no interconnected system of open and green spaces in the study area, quality and quantity of the existing urban open and green spaces were not very promising but there was an important reserve of open and green spaces on the fringes of the Bornova district that can be used for establishing a future green infrastructure.

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“…16 for a full local assessment of Istanbul). Similarly, progress is being made in urban habitat restoration in Izmir (Hepcan 2012 ). There are signifi cant variations in natural community types that accompany the soil and elevation gradient above Istanbul.…”

Section: Human Ecology Constraintsmentioning

confidence: 99%

Restoration Ecology in an Urbanizing World

Handel

Saito

Takeuchi

2013

Urbanization, Biodiversity and Ecosystem Services: Challenges and Opportunities

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As the world becomes more urbanized, the need for ecosystem services in our population centers has become a priority. The restoration of functioning habitats within cities is being successfully attempted throughout the world. Urban sites available for restoration ecology progress are usually small, surrounded by urban infrastructure, and isolated one from another. This fragmentation constrains the quality of natural communities that are pragmatic ecological targets. Defi ning restoration goals also must deal with urban abiotic stresses, including the heat island effect, disturbed soils, modifi ed local hydrology, and chemical pollutants in the air, water, and substrate. Existing biodiversity in cities also has atypical taxonomic structure, driven by the loss of many plant and animal species from the original site communities compounded by the addition of non-native plants and animals with high reproductive rates that invade the native remnants. These invasives can further

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Analyzing the pattern and connectivity of urban green spaces: A case study of Izmir, Turkey

Cited by 35 publications

References 20 publications

Urban Green Space Fragmentation and Urbanization: A Spatiotemporal Perspective

Urban Green Space Fragmentation and Urbanization: A Spatiotemporal Perspective

Urban green infrastructure analysis: The case of Bornova

Restoration Ecology in an Urbanizing World

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