scholarly journals ANALYZING LONG-TERM AVAILABILITY OF URBAN GREEN SPACE BY SOCIOECONOMIC STATUS IN MEDELLIN, COLOMBIA, USING OPEN DATA AND TOOLS

Author(s):  
J. E. Patiño

Abstract. The availability of green spaces is an important issue for urban populations worldwide, given the benefits that the green spaces provide for health, well-being, and quality of life. But urban green spaces are not always distributed equally for different population groups within cities. Latin America is the second most urbanized region of the world, but there are few published studies analysing the green space availability for different urban population groups, and less so analysing the long-term trends. This work presents an analysis of long-term availability of urban green spaces by different socioeconomic status population groups in Medellin city, Colombia, using open geospatial data and open software tools. The results indicate that disparities between different groups have been decreasing in the last years, but there are still efforts to do. Showing this kind of analysis based on open data and tools is essential as it opens the possibility for replicating it in other cities with scarce budgets.

Author(s):  
Viniece Jennings ◽  
Omoshalewa Bamkole

Social cohesion involves the interpersonal dynamics and sense of connection among people. Increased social cohesion can be associated with various physical and psychological health benefits. The presence of urban green spaces can encourage positive social interactions that cultivate social cohesion in ways that enhance health and well-being. Urban green spaces have also been linked to positive health behaviors and outcomes including increased physical activity and social engagement. Understanding the relationship between social cohesion and urban green space is important for informing holistic approaches to health. In this article, we discuss how positive interactions in urban green space can catalyze social cohesion, social capital and critical health-promoting behaviors that may enhance psychological health and well-being. We also summarize the strengths and limitations of previous studies and suggest directions for future research.


2021 ◽  
Vol 13 (12) ◽  
pp. 6806
Author(s):  
Shixian Luo ◽  
Jing Xie ◽  
Katsunori Furuya

Since the outbreak of the Novel Coronavirus Pneumonia in 2019, several cities have been blocked to prevent the expansion of the infection. This qualitative study aimed to determine the motives of urban residents for visiting urban green spaces during the epidemic (especially within the context of the city blockade), and what might weaken these motives. In total, 47 residents (17 men and 30 women) were recruited from Chengdu, in China, to participate in interviews. A thematic analysis was used to analyze the interview data. According to the results, the motives of the respondents were divided into strong motives and weak motives. These strong motives for visiting UGS can be divided into four themes: “A place for health”, “Escape”, “Social support”, and “A safe and important place for outdoor activities”. Residents classified as the weak motive primarily considered the reasons of “Keep distance with others”, “Potential infection risk” and “Seek compensation”. The results of this study are significant for current and future urban management, green space planning, and social well-being.


2019 ◽  
Vol 14 (1) ◽  
pp. 70-76
Author(s):  
Umran Topcu

Purpose Urban green spaces including parks and gardens are an essential part of a network of physical and social well-being. They provide spaces to socialize and opportunities to connect with nature. They are restorative enclaves. When it comes to scaling down spaces in general, they form important constituent parts of what we call the setting in which we behave. Barker elaborated the notion of behavior setting by describing how our behavior is influenced and constrained by settings. A setting consists of the space, its contents, its surroundings, the people and their activities. As Norberg-Schulz puts it, this is a microcosmos that wraps people and the space. The paper aims to discuss this issue. Design/methodology/approach In this study a behavior setting with different spatial attributes in an urban green space, namely, Kriton Curi Park on the Asian side of Istanbul is observed. Landscapes used by both men and women may be gendered even if men and women use them at the same time. Women’s and men’s experiences of the same setting can be different. The difference is likely to be the outcome of both the physical attributes of the setting and/or the social construction of the society. However, a general attribute of genders’ experience of space is that women are more sensitive to spatial contents and more selective about the use of space. According to previous research, men and women do not have equal control over behavior settings in urban green spaces, in Turkey. Findings The findings of this study address a social fact that appropriate physical features of urban green spaces like Criton Curi Park and its immediate environment reveal a higher degree of equality in gender roles. Originality/value As the literature indicates parks being among urban green spaces are not yet studied enough in the Turkish context. This study is an attempt to study the status of women in open public space. For the sustainability of social relations parks become even more important.


2021 ◽  
Vol 3 ◽  
Author(s):  
Petra Viebrantz ◽  
Maria Fernandes-Jesus

Urban Green Spaces (UGSs) play a key role in people's well-being, particularly in highly urbanized contexts and possess several elements that may be attractive to visitors. This study focuses on the views and perceptions of visitors of two UGSs located in Lisbon and aimed to determine how they evaluated two different green spaces (Estrela Park and Alameda Park) in terms of physical/natural characteristics, structures, accessibility, surrounding areas, motives for use and importance. Secondly, it sought to explore how people evaluate UGSs in Lisbon in terms of quality and quantity. A total of 188 people responded to a questionnaire composed of close-and open-ended questions. The study revealed that Estrela Park was more valued for its green space characteristics and conservation aspects than accessibility and sports adaptability. Participants visited Estrela Park for its landscape and restful environment and considered the park important to their lives. Although they visited Estrela Park less often, they stayed longer compared to those who visited Alameda Park. Furthermore, regarding the participants' overall perceptions of the UGSs in Lisbon, many participants mentioned the need for more parks and wanted better preservation and distribution around the city. Most importantly, they valued these spaces and believed that UGS helped them to feel more relaxed and balanced, facilitating socialization, recreation and physical activities. In conclusion, this study suggests that green and quiet urban parks in Lisbon are valued by the city's population but they would like to see regular maintenance/cleaning as well as the provision of leisure activities.


2020 ◽  
Vol 6 (345) ◽  
pp. 141-161
Author(s):  
Karolina Koprowska

Environmental justice is a term that includes both exposure to environmental ‘bads’ as well as access to environmental ‘goods’ which might be unequally experienced by different socio‑economic groups. In other words, environmental justice scholars study whether everybody can have an equal right to a healthy, nurturing environment which supports their development and well‑being. The environmental justice movement arose in response to the so‑called ‘environmental racism’ in the USA which affected communities of blue‑collar workers, people with lower income and of Afro‑American, Asian, Latin or native origins. Although initially environmental (in)justice was rooted in racial discrimination in the USA, nowadays it encompasses a wider range of issues, including problems at the local and global level, from degradation and pollution of natural resources to aspects related to spatial planning. Unequal access to environmental amenities – such as green spaces – was not the main focus of the discourse, however, it is gaining attention nowadays, especially in the context of urban environment. Urban green spaces influence health and well‑being of urban residents, but access to them can be uneven in terms of socio‑spatial heterogeneity. Growing challenges of living in cities, related to, among others, climate change, densification or sprawling of developments, urban heat islands, and other nuisances, require sustainable management of green spaces and provision of equal (socially just) access to benefits provided by these areas. Moreover, another important aspect of the discussion is linked to potentially beneficial planning decisions (e.g. increasing availability of urban green spaces) and their long‑term consequences, which may eventually lead to gentrification and increased social inequalities (environmental injustice). Complexity of the problem related to availability of green spaces in cities needs an interdisciplinary approach which combines ecological, spatial and socio‑economic aspects. The article reviews the current state‑of‑the‑art literature in the field of environmental justice, with particular emphasis on green space availability in the context of urban environment.  


Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 813
Author(s):  
Hui Dang ◽  
Jing Li ◽  
Yumeng Zhang ◽  
Zixiang Zhou

Urban green spaces can provide many types of ecosystem services for residents. An imbalance in the pattern of green spaces leads to an inequality of the benefits of such spaces. Given the current situation of environmental problems and the basic geographical conditions of Xi’an City, this study evaluated and mapped four kinds of ecosystem services from the perspective of equity: biodiversity, carbon sequestration, air purification, and climate regulation. Regionalization with dynamically constrained agglomerative clustering and partitioning (REDCAP) was used to obtain the partition groups of ecosystem services. The results indicate that first, the complexity of the urban green space community is low, and the level of biodiversity needs to be improved. The dry deposition flux of particulate matter (PM2.5) decreases from north to south, and green spaces enhance the adsorption of PM2.5. Carbon sequestration in the south and east is higher than that in the north and west, respectively. The average surface temperature in green spaces is lower than that in other urban areas. Second, urban green space resources in the study area are unevenly distributed. Therefore, ecosystem services in different areas are inequitable. Finally, based on the regionalization of integrated ecosystem services, an ecosystem services cluster was developed. This included 913 grid spaces, 12 partitions, and 5 clusters, which can provide a reference for distinct levels of ecosystem services management. This can assist urban managers who can use these indicators of ecosystem service levels for planning and guiding the overall development pattern of green spaces. The benefits would be a maximization of the ecological functions of green spaces, an improvement of the sustainable development of the city, and an improvement of people’s well-being.


2021 ◽  
Vol 10 (4) ◽  
pp. 251
Author(s):  
Christina Ludwig ◽  
Robert Hecht ◽  
Sven Lautenbach ◽  
Martin Schorcht ◽  
Alexander Zipf

Public urban green spaces are important for the urban quality of life. Still, comprehensive open data sets on urban green spaces are not available for most cities. As open and globally available data sets, the potential of Sentinel-2 satellite imagery and OpenStreetMap (OSM) data for urban green space mapping is high but limited due to their respective uncertainties. Sentinel-2 imagery cannot distinguish public from private green spaces and its spatial resolution of 10 m fails to capture fine-grained urban structures, while in OSM green spaces are not mapped consistently and with the same level of completeness everywhere. To address these limitations, we propose to fuse these data sets under explicit consideration of their uncertainties. The Sentinel-2 derived Normalized Difference Vegetation Index was fused with OSM data using the Dempster–Shafer theory to enhance the detection of small vegetated areas. The distinction between public and private green spaces was achieved using a Bayesian hierarchical model and OSM data. The analysis was performed based on land use parcels derived from OSM data and tested for the city of Dresden, Germany. The overall accuracy of the final map of public urban green spaces was 95% and was mainly influenced by the uncertainty of the public accessibility model.


2018 ◽  
Vol 10 (11) ◽  
pp. 3917 ◽  
Author(s):  
K Rahman ◽  
Dunfu Zhang

This study estimates the factors affecting socially vulnerable groups’ demand for and accessibility levels to green public spaces in Dhaka City, Bangladesh. Dhaka is a high-density city with one of the lowest levels of green space per capita in the world. Dhaka has just 8.5% of tree-covered lands, while an ideal city requires at least 20% of green space. Urban public green space provides a healthy environment to city dwellers as well as ecological soundness. This study aims to examine the effects of population density and size of a community area (Thana) on the social demand for and accessibility to green parks. To determine the socially vulnerable group demand index, this study used demographic data from the National Population and Housing Census 2011 conducted by the Bangladesh Bureau of Statistics. This study used geographical data extracted from Google Earth Pro to measure accessibility levels, and additionally analyzed geographical data with ArcGIS 10.0 and Google Earth Pro. We drew radius circles using Free Map Tools to measure time-distance weighted scores from community areas to urban green spaces. The results show that the large population size of socially vulnerable groups creates very high demand at the score of 0.61 for urban green public parks and small-sized, high-density community areas generate very good accessibility at 2.01% to green public spaces. These findings are highly useful to policymakers, urban planners, landscape engineers, and city governments to make a compact city sustainable, inclusive, and resilient. Moreover, the notion of a “smart city” might be a smart solution in order to manage Dhaka Megacity sustainably in this modern technological age.


2021 ◽  
Vol 3 ◽  
Author(s):  
Hanna Fors ◽  
Frederik Aagaard Hagemann ◽  
Åsa Ode Sang ◽  
Thomas B. Randrup

This systematic review contributes to the research field of user participation by suggesting a new holistic approach comprising a cyclic process model for long-term participation in the strategic management of urban green spaces, including analysis, design, and implementation phases, each followed by an evaluation. User participation in urban green spaces is encouraged in international conventions. Such initiatives aim to involve citizens more closely in decisions regarding local spaces, based on the premise that this will create better, more inclusive, and sustainable local environments. However, a social inclusion perspective is largely absent in the growing body of European scientific literature on urban green spaces. Further, user participation processes are often carried out within projects, with uncertainties about which strategic management phase (planning, design, construction, and/or maintenance) to emphasize and about the long-term sustainability of project-based participation. Therefore, the literature was examined for tools for participation with the focus on participation of local users in the strategic management of urban green spaces, and in particular, marginalized groups. A systematic review based on peer-reviewed scientific papers revealed the necessity for adapting participation processes to the known needs of different participant groups, including those of marginalized groups often excluded in the past. Local authorities have several pathways to socially inclusive and long-term participation. These include choosing and employing a suitable participation approach, anchoring repeated project-based participation in existing municipal long-term strategies, continuously supporting participating users and evaluating ongoing participation processes, and employing a mix of participation types and approaches. The “cyclic process model for long-term participation in strategic management of UGS” presented in this paper could guide such efforts.


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