Plant Biodiversity of Urban Roadside Trees in Antalya, Turkey

Year 2017, Volume: 17 Issue: 1, 80 - 87, 05.03.2017

Songül Sever Mutlu Ceren Selim , Gülçin Ün

https://doi.org/10.17475/kastorman.296501

Cited By: 2

Abstract

Planting
trees in urban areas has a number of environmental, social and ecological
benefits, and roadside trees are an integral part of urban green space. Having a broad diversity of trees in urban roadsides can
guard against the possibility of large-scale devastation by both native and
introduced insect and disease pests. Urban foresters and municipal arborists
are advised to follow guidelines for tree diversity within their areas of
jurisdiction: (1) plant no more than 10% of any species, (2) no more than 20 %
of any genus, and (3) no more than 30 % of any family. The aim of the study was
to assess biological diversity on the five major urban roadsides (Atatürk Boulevard, Yüzüncüyıl Boulevard,
Hürriyet Street, Serik Street, Palmiye Street). The species are identified and counted. Face to
face interviews were carried out with landscape architects/municipal arborists
to understand decision making process on selecting and deciding the species to
be planted.  Results showed that three
species and one genus do not fit to the expected ratio. Municipals lacked an
inventory list and a biodiversity scale for planning and planting in ratios
necessary to keep a diverse biological environment. Based on the shortcomings,
we would recommend to establish an inventory to do more informed decision
first, and plan new plantings in a way that would increase biodiversity in
species and genus level.

Keywords

Urban green space, Roadside trees, Biodiversity, Urban landscape

Kentsel Yol Ağaçlandırmalarında Biyoçeşitlilik, Antalya-Türkiye Örneği

Abstract

Kentsel yeşil alan
sisteminin ayrılmaz bir parçasını oluşturan kentsel alan ağaçlandırmaları
birçok çevresel, sosyal ve ekolojik faydayı da beraberinde getirmektedir.
Kentsel yol ağaçlandırmaları için seçilecek ağaç türlerinde çeşitliliğin
sağlanması yerli ve egzotik zararlılardan ve hastalık etmenlerinden kaynaklanan
büyük ölçekli hasarların önlenmesine olanak sağlar. Kent ormancıları ve
belediye bünyesinde çalışan ağaçlandırma ile ilgilenen uzmanlar kendi yetki
alanları içerisinde çeşitliliğin sağlanması için tavsiyelerde bulunmaktadır:
Bir alanda dikim yaparken (1) aynı türe ait bireylerin oranı toplam bireylerin
%10’unu, (2) aynı cinse ait bireyler tüm bireylerin %20’sini ve (3) aynı
familyaya ait bireylerin tüm bireylere oranının %30’u geçmemesi gerektiği
şeklindedir. Bu çalışmanın amacı Antalya ilinin 5 ana yol güzergahındaki
(Atatürk Bulvarı, Yüzüncüyıl Bulvarı, Hürriyet Caddesi, Serik Caddesi, Palmiye
Caddesi) yol boyu ağaçlandırmalarındaki biyolojik çeşitliliğin belirlenmesidir.
Çalışma kapsamında belirlenen caddelerdeki türler tek tek belirlenerek
sayılmıştır. Kullanılan türlerin belirlenmesi ve türlerin dikiminde karar
sürecini anlayabilmek ve bilgi edinmek için ilgili belediyelerde görev yapan
peyzaj mimarları ile yüz yüze görüşmeler yapılmıştır. Elde edilen sonuçlara
göre 3 türün ve 1 cinsin beklenen oranla uyuşmadığı belirlenmiştir.
Belediyelerin kullanılan türlerle ilgili herhangi bir envanter listesine sahip
olmadıkları, dikimlerde biyoçeşitliliği temel alan bir planlama yapmadıkları da
elde edilen sonuçlar arasındadır. Tavsiye edilen oranlara göre dikimlerin
yapılması çeşitliliğin sağlandığı bir biyolojik çevrenin sürdürülebilmesi için
önemli bir koşuldur. Belirlenmiş bu eksiklikler göz önüne alındığında öncelikle
daha bilinçli kararların verilebilmesi için envanterlerin yapılması
önerilmektedir. Ayrıca yeni yapılacak olan dikimlerle de tür ve cins
seviyesinde biyoçeşitliliğin arttırılmasını sağlayacak bir planlama
yapılmalıdır.

Keywords

Kentsel yeşil alanlar, Yol ağaçlandırması, Biyoçeşitlilik, Kentsel peyzaj

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