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The increasing demands of humankind contribute to the scarcity of natural resources and foster climate changes. For this reason, sustainable development has become a fundamental agenda in the twenty-first century. The intense urbanization induces significant changes in the natural water cycle, and this feature, coupled with neglecting the natural w...
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Citations
... Un tercer punto de unión estratégica es la incorporación de sistemas de reciclaje de agua en los techos verdes (Fraga et al., 2022;Speak et al., 2013). La recolección y reutilización del agua de lluvia para el riego de las plantas en el techo verde no sólo reduce la demanda de agua potable, sino que U N I E N D O F U E R Z A S PA R A C I U D A D E S S U S T E N TA B L E S 81 también minimiza la presión sobre los recursos hídricos locales. ...
La economía circular (EC) es un modelo que se contrapone a la economía lineal y busca desacelerar la extracción de materias primas y disposición final de materiales. Para una transición exitosa hacia la EC en México, se necesita adaptarla a la cultura mexicana, establecer sus características, los pasos y las eta¬pas, así como las métricas de la circularidad propias al contexto na¬cional, establecer el nivel de circularidad que se tiene hoy en día y su proyección a futuro. A nivel internacional cada país ha adaptado el concepto de EC a su contexto, teniendo diferentes conceptuali¬zaciones de la EC. México necesita definir la EC que más se adapte a sus características y necesidades. El desafío de establecer la tran¬sición hacía una EC en México es importante, ya que requiere de un cambio sistemático y del involucramiento de diversos actores. El presente libro tiene el objetivo de acercarse lo más posible a la conceptualización de EC mexicana.
The circular economy (CE) is a model that opposes the linear economy and seeks to slow down the extraction of raw materials and final disposal of materials. For a successful transition towards CE in Mexico, it is necessary to adapt it to the Mexican culture, establish its characteristics, the steps and stages, as well as the circularity metrics specific to the national context, establish the level of circularity that it exists today and its future projection. At the international level, each country has adapted the concept of CE to its context, having different conceptualizations of CE. Mexico needs to define the EC that best adapts to its characteristics and needs. The challenge of establishing the transition to a CE in Mexico is important, since it requires a systematic change and the involvement of various actors. This book aims to get as close as possible to the conceptualization of Mexican CE.
... Un tercer punto de unión estratégica es la incorporación de sistemas de reciclaje de agua en los techos verdes (Fraga et al., 2022;Speak et al., 2013). La recolección y reutilización del agua de lluvia para el riego de las plantas en el techo verde no sólo reduce la demanda de agua potable, sino que también minimiza la presión sobre los recursos hídricos locales. ...
El desarrollo urbano plantea desafíos como la degradación del entorno natural. La economía circular surge como un modelo para reducir la presión sobre los recursos al reutilizar y reciclar; en tanto que los techos verdes son una Solución basada en la naturaleza (SbN). Este trabajo se centra en buscar la relación entre la economía circular y los techos verdes como una forma de reintegrar la naturaleza a las ciudades. Por lo tanto se llevó a cabo una revisión bibliográfica utilizando el método PRISMA, abarcando el período de 2003 a 2023 con información de Web of Science (WoS) y un análisis bibliométrico en R con el paquete Bibliometrix. Este análisis bibliométrico resalta el creciente interés en conceptos como “Gestión”, “Ciudades”, “Desempeño” y “Modelo”, señalando un enfoque en evaluar y modelar el rendimiento de los techos verdes en la economía circular. Se identificó, la convergencia conceptual en el contexto urbano entre la economía circular y los techos verdes, con evidencia de aumentar sus beneficios ambientales al adicionar a su estructura el uso de materiales reciclados, lo cual favorece el ciclo de vida. Es necesario fomentar la sinergia entre ambos para su aplicación práctica con el objetivo de fortalecer el potencial de cada uno para trazar un futuro urbano equitativo y armonizado con la naturaleza.
Palabras clave: Desarrollo urbano, techos verdes, revisión bibliográfica, solución basada en la naturaleza, sustentabilidad.¬/
Urban development poses challenges such as the degradation of the natural environment. The circular economy emerges as a model to reduce pressure on resources by reusing and recycling; while green roofs are a Nature-Based Solution (NbS). This work focuses on finding the relationship between the circular economy and green roofs as a way to reintegrate nature into cities. Therefore, a bibliographic review was carried out using the PRISMA method, covering the period from 2003 to 2023 with information from the Web of Science (WoS) and a bibliometric analysis in R with the Bibliometrix package. This bibliometric analysis highlights the growing interest in concepts such as “Management”, “Cities”, “Performance” and “Model”, pointing to a focus on evaluating and modeling the performance of green roofs in the circular economy. The conceptual convergence in the urban context between the circular economy and green roofs was identified, with evidence of increasing their environmental benefits by adding the use of recycled materials to their structure, which favors the life cycle. It is necessary to promote synergy between the two for their practical application with the aim of strengthening the potential of each to chart an equitable urban future harmonized with nature.
Keywords: Urban development, green roofs, literature review, nature-based solution, sustainability.
... Un tercer punto de unión estratégica es la incorporación de sistemas de reciclaje de agua en los techos verdes (Fraga et al., 2022;Speak et al., 2013). La recolección y reutilización del agua de lluvia para el riego de las plantas en el techo verde no sólo reduce la demanda de agua potable, sino que U N I E N D O F U E R Z A S PA R A C I U D A D E S S U S T E N TA B L E S 81 también minimiza la presión sobre los recursos hídricos locales. ...
La industria textil y de la confección (itc) es una de las principales influyentes en el estilo de vida de millones de personas y con mayores ingresos
económicos, también se encuentra señalada como de las mayores productoras de contaminantes a nivel mundial debido a sus pocas prácticas sustentables y el seguimiento del modelo de economía lineal. La incorporación
de un modelo de economía circular dentro de esta industria es más que necesario para conseguir los objetivos de la agenda 2030, sin mencionar que
es uno de los sectores con menor involucramiento en estos temas. La itc
en México es muy relevante, cuenta con una diversidad de productores
tanto de pequeñas como de grandes empresas. Sin embargo, en el país aún
no se ha conseguido la trascendencia ni los resultados que se buscan con
los modelos circulares, por lo que se deben conocer cuáles son los motivos o las barreras que retrasan la introducción de la itc en una economía circular. Puesto que éste es el objetivo principal de la investigación, se realizó
una revisión bibliográfica (artículos, páginas web, normativa) identificándo
cuatro barreras: etiquetado y clonación, comercios minoristas-electrónicos;
políticas e incentivos para la economía circular; manejo de residuos y escasez de tecnología. En cada una se encontró que influye de forma directa la
relación productor-comprador, donde existe el temor a pérdidas monetarias
que no incentiva un cambio estructural; para alcanzarlo debe coexistir un
apoyo que implique la participación de autoridades, empresas y consumidor,
involucrados dentro de un sistema de consumo circular.
... Over the past decade, RWH systems have been recognized as inefficient facilities because of their low benefits relative to costs [24,28]. Accordingly, recent studies considered social benefits such as constant production cost reduction, dam-related cost reduction, excellent outflow reduction, environmental pollution reduction, heat wave reduction, and fine dust reduction as factors of benefits [29][30][31][32][33]. However, the social benefits are ambiguous to evaluate and are not real economic benefits that users who use RWH systems can actually feel. ...
Water risk has been continuously rising due to climate change and ownership disputes of water resources. Dam construction to secure water resources may lead to environmental problems and upstream immersion. On the other hand, rainwater harvesting systems can effectively supply water at a low cost, although economic efficiency of these systems is still debatable. This study evaluates financial support programs to promote installation of rainwater harvesting systems, increasing economic feasibility. Based on a cost–benefit analysis, capacity optimization methods are further suggested. A sensitivity analysis is performed to determine the relative importance among uncertain parameters such as inflation and discount rates. In doing so, priority factors to consider in the design of rainwater harvesting systems are ultimately identified. A net present value, although it is sensitive to the inflation rate, is shown to be more appropriate to estimate the economic efficiency of rainwater harvesting system, compared to the typical cost–benefit ratio. Because the high future value overestimates the economic feasibility of rainwater harvesting systems, proper inflation rates should be applied. All in all, a funding program to promote rainwater harvesting systems significantly increases the benefits. Thus, national financial support policies are recommended to ensure economic feasibility of rainwater harvesting systems.
... Arfanuzzaman et al. (2021) used a comprehensive cost-benefit analysis approach to assess the promising adaptation practices, economic return, and social welfare in the lower Teesta River basin. Fraga et al. (2022) proposed sustainable urban drainage techniques to match urban and natural demands and performed a cost-benefit analysis of sustainable drainage systems considering ecosystem services benefits. Teague et al. (2021) proposed a serious gaming framework for the decision-making process in water resources planning and hazard mitigation, and developed a web-based decision support tool for analyzing a cost-benefit relationship for potential hazard mitigation strategies with dynamic analytics tools. ...
The present study aims to specify optimum water resources depending on a cost-benefit relationship for residential areas by heuristic optimization. For this purpose, a case study of Rutba City in Iraq was applied. It is planned that water demand of the city is supplied by four different pumped pipelines (Pipelines 1–4). An optimum water supply among these pipelines was determined by considering their daily incomes (water charge per m3) and expenses (electricity price of pump stations), and daily demand for the city. In order to solve this optimization problem, a heuristic optimization model using a modified clonal selection algorithm (Clonalg), a class of artificial immune aystems was improved. The algorithm was coded in Matlab programming language, and it was run ten times to test its stability. Two objective functions of total daily income and expense were simultaneously used to maximize total daily net income under the constraints of the required daily water demand of the city and pump discharge capacities. Another constraint was that total net income for ten years should finance the initial cost of the unconstructed pipeline 4. The results showed that the optimization model using the modified Clonalg is useful and feasible for determining optimum water supply in terms of the cost-benefit relationship. HIGHLIGHTS
The optimization model was improved to specify optimum water resources based on a cost-benefit relationship.;
The model is stable for obtaining the best result.;
The model can solve the problem in a short execution time.;
... The intense urbanization induces significant changes in the natural water cycle, and in this context, sustainable urban drainage techniques have been proposed to match the urban and natural demands, while preserving or recovering the environmental functions, as much as possible. Article (Fraga et al. 2021) aims to evaluate the economic viability of sustainable urban drainage systems considering the ecosystem services provided by green roofs and rainwater harvesting barrels and including their action in delivering urban revitalization and valorisation. The results showed a best-performing scenario for the rainwater harvesting system with a payback of approximately three years, a benefit-cost ratio of four, and an internal return rate of 45%. ...
This paper presents an overview for the special issue of Clean Technology and Environmental Policy journal (CTEP), and it includes invited papers from four Conferences on Sustainable Development of Energy, Water and Environment Systems (SDEWES) held in 2020. Conferences whose paper are a part of this overview are: 15th SDEWES Conference (01st September to the 5th September in Cologne, Germany), the 4th South East European SDEWES Conference (28th June to 2nd July in Sarajevo, Bosnia and Herzegovina), 2nd Latin American SDEWES Conference (09th to 12th February in Buenos Aires, Argentina) and 1st Asia Pacific SDEWES Conference (06th to 09th April, Gold Coast, Australia). Considering CTEP policy of high quality research papers, guest editors have invited 33 research articles, presented on the SDEWES 2020 conferences. After vigorous review process 16 papers have been accepted for publication within this special issue. All 16 accepted papers are briefly presented in this overview together with a wider view that presents research efforts within the SDEWES community published through previous SDEWES special issues.
... This is a common approach in studying SuDS because the benefits of new solutions must be somehow measured to provide a good insight into its applicability and efficiency. One of the most sensible measures can be financial analysis [41]. ...
Urban drainage systems are in transition from functioning simply as a transport system to becoming an important element of urban flood protection measures providing considerable influence on urban infrastructure sustainability. Rapid urbanization combined with the implications of climate change is one of the major emerging challenges. The increased concerns with water security and the ageing of existing drainage infrastructure are new challenges in improving urban water management. This study carried out in the Seixal area in Portugal examines flood risk analyses and mitigation techniques performed by computational modelling using MIKE SHE from the Danish Hydraulic Institute (DHI). Several scenarios were compared regarding flood risk and sustainable urban drainage systems (SuDS) efficiency. To obtain a more accurate analysis, the economic viability of each technique was analyzed as well through (i) life cost analysis and (ii) taking into account the damages caused by a certain type of flood. The results present that the best scenario is the one that will minimize the effects of great urbanization and consequently the flood risk, which combines two different measures: permeable pavement and detention basin. This alternative allows us to fully explore the mitigation capacity of each viable technique, demonstrating a very important improvement in the flood mitigation system in Seixal.
Abstract
The potential of urban nature-based solutions (NBS) to provide significant benefits to citizens and to address societal challenges is undervalued, yet the valuation of NBS impacts remains contentious. Further development of monetary and non-monetary valuation of the costs and benefits of urban NBS is required, and effective knowledge exchange on these themes is required at the international level. However, an important gap in research relates to the uptake and application of existing techniques for monetary valuation. This research explored how monetary values of urban NBS are assessed, and how NBS valuation is viewed by city government authorities in particular. Results are presented from a review of peer-reviewed articles reporting urban NBS valuation techniques development and application. Over 200 articles relating specifically to urban NBS interventions were reviewed. The literature indicates that many valuation techniques have been researched, but most studies tend to address just a few indicators of NBS impacts, which are mainly physical-environmental in their focus. To generate deeper insights into perceptions of monetary valuations in NBS impact assessments and their application, focus groups and semi-structured interviews were conducted with local and regional government staff in seven cities in Latin America and Europe. Although a wide range of economic valuation tools exist and can be applied to support NBS development, limited evidence was found for their uptake and application in practice across the contexts examined. We discuss potential reasons for limited uptake, which may include overburdensome data demands, incommensurability with existing decision-making and accounting practices, and limited staffing, financial and technical capacity - even within large cities. Results suggest that successful NBS interventions may portray economic impacts, but NBS propositions should not depend upon monetary valuations alone; social and ecological criteria remain centrally important. Participatory impact assessment methods may support improved business cases and monetary valuations for urban NBS.
