ارزيابي پايداري فضاهاي سبز شهري در مناطق پانزده گانۀ شهر اصفهان

Assessment of sustainability in Urban Green Space in 15 districts of Isfahan

قرارگرفتن در فضاي مدرن، افزايش جمعيت و رشد شهرنشيني، شهرها را به كانون تجمع هاي زيستي و فعاليت هاي مختلف تبديل كرده و آن ها را با كمبود فضاهاي سبز عمومي روبه رو ساخته است. از سوي ديگر، گذر از مدرنيته و قرارگرفتن در جهان پسامدرن و نيز به وجودآمدن حس نوستالژيك در اين فضا، نياز شهروندان براي گذران اوقات فراغت را افزايش داده و سبب گرايش به بازگشت به فضاهاي سبز در شهرهاي مدرن شده است كه اين خود آثار اجتماعي، رواني و فرهنگي زيادي را شهرنشينان اين فضاها دارد. اهميت فضاهاي سبز شهري تا حدي است كه امروزه وجود اين كاربري، يكي از شاخص هاي توسعه يافتگي جوامع به شمار مي آيد. هدف اين پژوهش، بررسي فضاهاي سبز درجهت رسيدن به استانداردها و وضعيت مطلوب و نيز ارزيابي پايداري شهري از منظر پارك ها و فضاهاي سبز عمومي در شهر اصفهان است و در آن، به صورت تطبيقي، مناطق پانزده گانه كلان شهر اصفهان بررسي شده است. پژوهش، اسنادي تحليلي است و جمع بندي داده هاي كمي در قالب مدل ضريب پراكندگي، - نتيجه نهايي تحقيق را به دست داده است. يافته ها در زمينه چگونگي توزيع فضاهاي سبز شهري در مناطق پانزده گانه اصفهان نشانگر آن است كه توزيع فضاهاي سبز شهري در شهر اصفهان، متعادل است؛ به نحوي كه از اين منظر، مناطق شهري 2 ، 4 ، 5 و 6 در شرايط پايدار، مناطق 7 ، 9 ، 12 و 13 در شرايط نيمه پايدار و ساير مناطق در شرايط ناپايدار به سر مي برند.

Introduction: Urban green spaces play an important role in improving quality of life and sustainability in cities and require a careful empirical assessment. Several factors such as social، economic، ecological or planning aspects and several functions such as utilization، production، employment، education، regulation and preservation of urban green spaces form the basis for the determination of the criteria and indicators relevant for the assessment of urban green spaces. The city is identified as altered natural environment by excessive changes in nature and increasing presence of manmade structures. Urban green spaces are remnants of nature in this environment and play an important role in ascending the level of life quality in the city. In this study the sustainability of urban green spaces in Isfahan city were studied. The studies indicate a considerable balance and sustainability in urban green spaces with a more intensity in the Isfahan zones. Methodology: The methodology of this paper is analytical and descriptive and applied in biased on goal. The results of this paper can use in programs and politics in Isfahan municipality. The scale of the research is urban green space in Isfahan city. The data and information collected from Isfahan municipality. For data analysis we use land measurement model، urban green spaces modal and D.V model for urban land diffusion. Result and Discussion: In land use planning، urban open space is open space areas for "parks"، "green spaces"، and other open areas. The landscape of urban open spaces can range from playing fields to highly maintained environments to relatively natural landscapes. They are commonly open to public access، however، urban open spaces may be privately owned. In between urban land use، green spaces are part of the frameworks of the cities، which we refer to as the animate of the framework structure of the city، and in correlation with inanimate of the city; they create the texture and appearance of it. But according to importance of expansion of green space in cities، instead of the development and expansion of these spaces in Isfahan which was someday regarded as the model of Islamic garden –city with appropriate green space، the focus in the recent years have been more on the development of framework- residential، commercial، structures and roads، parking lots etc. In land use planning، urban open space is open space areas for "parks"، "green spaces"، and other open areas. The landscape of urban open spaces can range from playing fields to highly maintained environments to relatively natural landscapes. They are commonly open to public access، however، urban open spaces may be privately owned. In between urban land use، green spaces are part of the frameworks of the cities، which we refer to as the animate of the framework structure of the city، and in correlation with inanimate of the city; they create the texture and appearance of it. But according to importance of expansion of green space in cities، instead of the development and expansion of these spaces in Isfahan which was someday regarded as the model of Islamic garden –city with appropriate green space، the focus in the recent years have been more on the development of framework- residential، commercial، structures and roads، parking lots etc. In land use planning، urban open space is open space areas for "parks"، "green spaces"، and other open areas. The landscape of urban open spaces can range from playing fields to highly maintained environments to relatively natural landscapes. They are commonly open to public access، however، urban open spaces may be privately owned. In between urban land use، green spaces are part of the frameworks of the cities، which we refer to as the animate of the framework structure of the city، and in correlation with inanimate of the city; they create the texture and appearance of it. But according to importance of expansion of green space in cities، instead of the development and expansion of these spaces in Isfahan which was someday regarded as the model of Islamic garden –city with appropriate green space، the focus in the recent years have been more on the development of framework- residential، commercial، structures and roads، parking lots etc. In land use planning، urban open space is open space areas for "parks"، "green spaces"، and other open areas. The landscape of urban open spaces can range from playing fields to highly maintained environments to relatively natural landscapes. They are commonly open to public access، however، urban open spaces may be privately owned. Conclusion: Urban green space provides recreational areas for residents and helps to enhance the beauty and environmental quality of neighborhoods. But with this broad range of recreational sites comes an equally broad range of environmental issues. Just as in any other land uses، the way parks are managed can have good or bad environmental impacts، from pesticide runoff، siltation from overused hiking and logging trails، and destruction of habitat. Lack of community and public access to safe open and green space is a critical area of concern for urban residents in Isfahan city.By allocating mainly open and undeveloped lands to green and open space development، improving average per capita green space is targeted. With considering land availability and differences in population concentration all 15 urban districts faces different limitation and therefore need to adapt different and appropriate strategies. In this paper whole of species of urban space such as parks، green belts، urban green space in street in 15 districts in Isfahan city analyzed. The results show that 4 districts of Isfahan has more urban green space and 11 districts has least urban green space.