scholarly journals Urban Ecosystem: An Interaction of Biological and Physical Components

2021 ◽  
Author(s):  
Hassanali Mollashahi ◽  
Magdalena Szymura

Urban ecosystems are composed of biological components (plants, animals, microorganisms, and other forms of life) and physical components (soil, water, air, climate, and topography) which interact together. In terms of “Urban Green infrastructure (UGI)”, these components are in a combination of natural and constructed materials of urban space that have an important role in metabolic processes, biodiversity, and ecosystem resiliency underlying valuable ecosystem services. The increase in the world’s population in urban areas is a driving force to threat the environmental resources and public health in cities; thus, the necessity to adopt sustainable practices for communities are crucial for improving and maintaining urban environmental health. This chapter emphasizes the most important issues associated with urban ecosystem, highlighting the recent findings as a guide for future UGI management, which can support city planners, public health officials, and architectural designers to quantify cities more responsive, safer places for people.

2021 ◽  
Vol 13 (16) ◽  
pp. 9182
Author(s):  
Gabriella Vindigni ◽  
Alexandros Mosca ◽  
Tommaso Bartoloni ◽  
Daniela Spina

The objective of this paper is to provide an overall perspective on peri-urban ecosystem services in European Countries. The phenomenon of urbanization affecting our era has seen the shift of the city from compact and well-defined structures to agglomerations with a seamless expansion. This has led to several environmental consequences that have affected the urbanized areas and the surroundings. The peri-urban areas may be the main urban design and planning challenge of the 21st century. These hybrid landscapes, characterized by high fragmentation, can be turned into opportunities to improve the sustainability and quality of urban areas, generating multiple economic, social and environmental benefits. Areas beyond the immediate urban core can be considered a zone of influence, which represent a critical resource in terms of provisioning, regulating, supporting services and cultural ecosystem services. Our study has been developed in the framework of the project “Fertile Lands, Fragile Lands” funded by the University of Catania. A multi-phased method has been applied, showing strong, heterogeneous ties between landscape and ecosystem services. While the importance of literature studies on this topic is well recognized, the same attention has not been placed on the tools and methods of conducting systematic and incremental literature reviews. Using Leximancer software, we propose a text mining approach to extract relevant themes and concepts as well as related topics of interest from identified literature on peri-urban ecosystems. We first introduce the overall methodology and then discuss each phase in detail. The outputs can be used as starting point for broad exploratory reviews and allow further exploration in this issue. The results show how the peri-urban space can be seen as a mosaic in which the settlement, the agricultural and the environmental systems interact and coexist, placing at the centre the relationship of reciprocity between the built environment and the open territory.


Elem Sci Anth ◽  
2019 ◽  
Vol 7 ◽  
Author(s):  
Daniel L. Childers ◽  
Paul Bois ◽  
Hilairy E. Hartnett ◽  
Timon McPhearson ◽  
Geneviève S. Metson ◽  
...  

It is likely that half of the urban areas that will exist in 2050 have not yet been designed and built. This provides tremendous opportunities for enhancing urban sustainability, and using “nature in cities” is critical to more resilient solutions to urban challenges. Terms for “urban nature” include Green Infrastructure (GI), Green-Blue Infrastructure (GBI), Urban Green Space (UGS), and Nature-Based Solutions (NBS). These terms, and the concepts they represent, are incomplete because they tend to reduce the importance of non-terrestrial ecological features in cities. We argue that the concept of Urban Ecological Infrastructure (UEI), which came from a 2013 forum held in Beijing and from several subsequent 2017 publications, is a more inclusive alternative. In this paper we refine the 2013 definition of UEI and link the concept more directly to urban ecosystem services. In our refined definition, UEI comprises all parts of a city that support ecological structures and functions, as well as the ecosystem services provided by UEI that directly affect human outcomes and wellbeing. UEI often includes aspects of the built environment, and we discuss examples of this “hybrid infrastructure”. We distinguish terrestrial, aquatic, and wetland UEI because each type provides different ecosystem services. We present several examples of both “accidental” UEI and UEI that was explicitly designed and managed, with an emphasis on wetland UEI because these ecotonal ecosystems are uniquely both terrestrial and aquatic. We show how both accidental and planned UEI produces unexpected ecosystem services, which justifies recognizing and maintaining both purposeful and serendipitous types of UEI in cities. Finally, we posit that by incorporating both “ecological” and “infrastructure”, UEI also helps to bridge urban scientists and urban practitioners in a more transdisciplinary partnership to build more resilient and sustainable cities.


2020 ◽  
Vol 2 (3) ◽  
pp. 283-296 ◽  
Author(s):  
Frederik Aagaard Hagemann ◽  
Thomas B. Randrup ◽  
Åsa Ode Sang

Abstract In building a sustainable society, numerous ecosystem services have shown to play important roles for the benefit of urban residents. The distinct concept of Urban Ecosystem Services (UES) to accentuate and enhance the value of urban ecosystems has been proposed, primarily in research, with implementation in practice still at an early stage. This study examined challenges to future implementation of the UES concept in municipal planning and management of urban green spaces. Based on interviews in six Swedish municipalities, we identified four overall discourses challenging implementation of UES in municipal practice. These included (i) a need to prioritize UES in municipal planning in order to address the contemporary challenges of e.g., urbanization and biodiversity loss. This in turn creates (ii) a need for increased holistic thinking within the municipal organization, based on (iii) further documentation and standards, which should help (iv) initiate organizational transition and cross-sectorial approaches. These discourses provide interrelated challenges that could also act as opportunities for scientists and practitioners collaborations to advance integration of UES into planning and management, thereby increasing the sustainability of urban environments. This work provides a starting point for introduction of the UES concept into municipal planning.


2020 ◽  
Vol 29 (1) ◽  
pp. 67-87 ◽  
Author(s):  
Christian Hunold

City-scale urban greening is expanding wildlife habitat in previously less hospitable urban areas. Does this transformation also prompt a reckoning with the longstanding idea that cities are places intended to satisfy primarily human needs? I pose this question in the context of one of North America's most ambitious green infrastructure programmes to manage urban runoff: Philadelphia's Green City, Clean Waters. Given that the city's green infrastructure plans have little to say about wildlife, I investigate how wild animals fit into urban greening professionals' conceptions of the urban. I argue that practitioners relate to urban wildlife via three distinctive frames: 1) animal control, 2) public health and 3) biodiversity, and explore the implications of each for peaceful human-wildlife coexistence in 'greened' cities.


Land ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 101 ◽  
Author(s):  
Janis Arnold ◽  
Janina Kleemann ◽  
Christine Fürst

Urban ecosystem services (ES) contribute to the compensation of negative effects caused by cities by means of, for example, reducing air pollution and providing cooling effects during the summer time. In this study, an approach is described that combines the regional biotope and land use data set, hemeroby and the accessibility of open space in order to assess the provision of urban ES. Hemeroby expresses the degree of naturalness of land use types and, therefore, provides a differentiated assessment of urban ES. Assessment of the local capacity to provide urban ES was conducted with a spatially explicit modeling approach in the city of Halle (Saale) in Germany. The following urban ES were assessed: (a) global climate regulation, (b) local climate regulation, (c) air pollution control, (d) water cycle regulation, (e) food production, (f) nature experience and (g) leisure activities. We identified areas with high and low capacity of ES in the urban context. For instance, the central parts of Halle had very low or no capacity to provide ES due to highly compact building styles and soil sealing. In contrast, peri-urban areas had particularly high capacities. The potential provision of regulating services was spatially limited due to the location of land use types that provide these services.


2019 ◽  
Author(s):  
Bambang Sulistyantara ◽  
Imawan W. Hidayat ◽  
A. Nasirudin Taher ◽  
Hendrawan

Trees are essential elements of an urban space. The presence of trees in urban areas is not only appreciated as physical attribute, but beyond this, it serves a fundamental function in balancing and conserving urban ecosystem. Especially in tropical countries like Indonesia which receive high levels of solar radiation, trees contribute to the protection of urban areas from the impact of excessive micro-climatic conditions. But, the presence of trees sometimes resulted in the accidents for the residences because of broken branches and human injuries. This situation leads the city to prepare a tree inventory system, which is beneficial in giving the information about tree conditions and thus the information that would be useful for tree maintenance activities. The tree inventory on application for the city of East Jakarta was built for this purpose, comprising a tree inventory and easy access to the database. The application connects the database source with the GIS map, so that the users could retrieve information for each kind of data.


AMBIO ◽  
2014 ◽  
Vol 43 (4) ◽  
pp. 445-453 ◽  
Author(s):  
Erik Andersson ◽  
Stephan Barthel ◽  
Sara Borgström ◽  
Johan Colding ◽  
Thomas Elmqvist ◽  
...  

Author(s):  
Marise Barreiros Horta ◽  
Maria Inês Cabral ◽  
Iva Pires ◽  
Laura Salles Bachi ◽  
Ana Luz ◽  
...  

By integrating social, ecological, and economic perspectives, the assessment of ecosystem services (ES) provides valuable information for better targeting landscape planning and governance. This chapter summarizes different participatory approaches for assessing ES in urban areas of three countries. In Belo Horizonte (Brazil), a conceptual framework for the vacant lots ES assessment is presented as an attempt to integrate landscape, social, and political dimensions. In Leipzig (Germany), a combination of site surveys, interviews, and remote sensing provides a valuable data set that fostered a comparative study between two forms of urban gardening. In Lisbon (Portugal), the study is based on interviews that offer a social insight into the horticultural parks situation, which in turn demands a better dialogue with the municipality. In general, the studies demonstrate the potential benefits of utilizing the ES assessment approaches on urban landscapes, especially for better understanding the interactions between people and nature in urban sites.


2019 ◽  
Vol 11 (22) ◽  
pp. 6200 ◽  
Author(s):  
Daniel Richards ◽  
Mahyar Masoudi ◽  
Rachel R. Y. Oh ◽  
Erik S. Yando ◽  
Jingyuan Zhang ◽  
...  

Humans rely upon ecosystem services to regulate their environment and to provide resources and cultural benefits. As the world’s urban population grows, it becomes increasingly important to find ways of improving the provision of ecosystem services in urban areas. However, the kinds of ecosystem services that are most needed or demanded by urban populations, and the opportunities to provide these, vary widely in cities around the world. Here we explore variation in climate, Human Development Index (HDI), and population density, and discuss their implications for providing and managing urban ecosystem services. Using 221 published studies of urban ecosystem services, we analyse the extent to which existing research adequately covers global variation in climatic and social conditions. Our results reveal an under-representation of studies from tropical cities and from lower HDI countries, with implications for how we conceptualize and quantify urban ecosystem services, and how we transfer benefits across case studies. Future work should be aimed at correcting these deficits and determining the extent to which conclusions about urban ecosystem services are transferable from one city to another.


2021 ◽  
Author(s):  
Eduardo Blanco ◽  
Maibritt Pedersen Zari ◽  
Kalina Raskin ◽  
Philippe Clergeau

By 2050, 68% of the world’s population will likely live in cities. Human settlements depend on resources, benefits, and services from ecosystems, but they also tend to deplete ecosystem health. To address this situation, a new urban design and planning approach is emerging. Based on regenerative design, ecosystem-level biomimicry, and ecosystem services theories, it proposes designing projects that reconnect urban space to natural ecosystems and regenerate whole socio-ecosystems, contributing to ecosystem health and ecosystem services production. In this paper, we review ecosystems as models for urban design and review recent research on ecosystem services production. We also examine two illustrative case studies using this approach: Lavasa Hill in India and Lloyd Crossing in the U.S.A. With increasing conceptualisation and application, we argue that the approach contributes positive impacts to socio-ecosystems and enables scale jumping of regenerative practices at the urban scale. However, ecosystem-level biomimicry practices in urban design to create regenerative impact still lack crucial integrated knowledge on ecosystem functioning and ecosystem services productions, making it less effective than potentially it could be. We identify crucial gaps in knowledge where further research is needed and pose further relevant research questions to make ecosystem-level biomimicry approaches aiming for regenerative impact more effective.


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