An urban material flow analysis framework and measurement method from the perspective of urban metabolism

Wang, Xinjing; Li, Yanxian; Liu, Ningyin; Zhang, Yan

doi:10.1016/j.jclepro.2020.120564

Cited by 41 publications

(23 citation statements)

References 13 publications

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“…Especially when city streams (material and energy flows, transport) cross the city's borders [56]. Scientist mostly focus on traditional and most visible physical (material and energy) flows that could be easily monitored and evaluated using local data [56,99,100]. However, other non-material flows, coexist and circulate inside and outside city.…”

Section: Concept Of Circular Urban Metabolismmentioning

confidence: 99%

Seeking Circularity: Circular Urban Metabolism in the Context of Industrial Symbiosis

Feiferytė-Skirienė

Stasiškienė

2021

Sustainability

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Cities are leading in the implementation of circular economy (CE) principles and sustainable development due to the concentration of knowledge, resources and technology while remaining the highest consumers and producers of resources. CE, urban metabolism (UM) and industrial symbiosis (IS) offer a new more holistic approach based on material and energy flow analysis and materials recovery from waste by creating IS networks to support a new circular urban system (CUM) which contrast to the traditional linear extract-produce-use-dispose model of economic systems. In this paper, we present the concepts of CE, IS and CUM and how the new framework could improve cities transition to sustainability and CE, with detailed CE and IS indicators analysis. We introduce the relations between IS, CE and UM concepts, how they can be used and monitored in the CUM framework. CUM can help unite urban planners, the city’s governance and the business sector to promote collaboration across the city to improve future sustainability and circularity by closing loops.

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Section: Concept Of Circular Urban Metabolismmentioning

confidence: 99%

Seeking Circularity: Circular Urban Metabolism in the Context of Industrial Symbiosis

Feiferytė-Skirienė

Stasiškienė

2021

Sustainability

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“…By using these eight sectors as the metabolic components of the urban system, we were able to obtain a refined description of the metabolic processes by identifying the relationships among these components and quantifying the material exchanges between them (Li et al. 2019a, 2019b; Wang et al., 2020).…”

Section: Methodsmentioning

confidence: 99%

“…(2019a) and Wang et al. (2020) to convert the original data into the corresponding mass of the material flows. We used the bottom‐up accounting method to quantify the direct material consumption, domestic extraction, and emissions or wastes of the urban systems by combining the material categories consumed by each component.…”

Section: Methodsmentioning

confidence: 99%

“…Based on our accounting for material direct inputs, outputs, and consumption, we calculated the imports and exports. Since the import and export data for cities cannot be directly obtained from the available statistical data, except for some data obtained by investigating the purchase and sales of enterprise products (such as the products of energy and food companies), the remaining imports and exports for different materials can be calculated as the difference between the domestic extraction and DMC based on certain assumptions (Li et al., 2019b; Wang et al., 2020). Depending on the urgency, importance, and the degree of demand and supply of a given material, we can calculate the imports and exports of this material for different metabolic components (Section S1.3.1 in Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

“…At the same time, there has been little comparative analysis of the long‐term material consumption dynamics of multi‐scale socioeconomic systems. There have been few studies, and the ones that exist mainly concentrated on individual cities (Liang & Zhang, 2011; Wang et al., 2020). However, developing an in‐depth understanding of material consumption dynamics at multiple scales, especially for urban agglomerations, would help urban managers to improve China's resource‐utilization efficiency and mitigate pressure on the resource supply.…”

Section: Introductionmentioning

confidence: 99%

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Continuous urbanization and a coordinated regional development strategy have gradually shaped urban agglomerations as new and massive centers of resource consumption in China. Therefore, understanding the material consumption status and the underlying mechanisms for typical Chinese urban agglomerations will support efforts to promote regional resource‐utilization sustainability. In this study, we analyzed material consumption and its structure in the Beijing–Tianjin–Hebei (Jing–Jin–Ji) urban agglomeration from 2000 to 2015 and traced the sources of material consumption and underlying processes from a metabolic perspective. We also identified the main contributors and key drivers behind the changes of consumption during this period. The urban agglomeration's total consumption increased 2.2 times compared to the 2,000 level during the study period, with metallic minerals accounting for the largest proportion. Highly developed cities, including Beijing, Tianjin, Shijiazhuang, Tangshan, and Handan, consumed the largest amounts of materials and generated the most wastes. These cities also relied heavily on both internal and external resources and exchanged materials frequently among their metabolic compartments. Economic activity was the strongest contributor to the increased material consumption, followed by the population increase, whereas decreasing material‐consumption intensity (increased efficiency) restrained the growth of material consumption somewhat. Our application of the material‐flow accounting framework at the scale of an urban agglomeration provides support for future research on material consumption in other typical urban agglomerations, where it can provide support for policy development to alleviate regional resource shortages.

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In our study, we are evaluating the dynamic interplay between circular cities and the circular economy, revealing connections shaped by new research insights, using Web of Science database. We have in depth analysed 671 publications from 1990 to mid‐2023, employing Leximancer and VOSviewer tools. Our analysis uncovered key themes, including buildings, waste management, value chains, and sustainable development, linking the circular cities concept and circular economy framework. Emerging research trends, such as urban metabolism, urban mining, governance models, the built environment, sustainability benchmarks, and value chain management, signify deliberate shifts towards higher circular development and implementation. These trajectories harmonise with overarching sustainable development goals. Contemporary research emphasises urban mining, circular indicators, adaptive resource reuse, and urban structure regeneration. This focus facilitates transitioning from linear models to heightened circularity within urban contexts. Research inclination is shifting from traditional economic and environmental concerns towards holistic urban configurations that prioritise social integration, communal well‐being, and the dynamics of the social economy. Through this analytical expedition, we offer novel insights that enhance our understanding of the intricate symbiosis between circular cities and the circular economy. Our findings provide a scientific foundation for formulating targeted strategies by decision‐makers and guiding urban landscapes towards transformative trajectories aligned with sustainable development objectives and sustainable cities.

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An urban material flow analysis framework and measurement method from the perspective of urban metabolism

Cited by 41 publications

References 13 publications

Seeking Circularity: Circular Urban Metabolism in the Context of Industrial Symbiosis

Seeking Circularity: Circular Urban Metabolism in the Context of Industrial Symbiosis

Regional consumption, material flows, and their driving forces: A case study of China's Beijing–Tianjin–Hebei (Jing–Jin–Ji) urban agglomeration

The complexity and interconnectedness of circular cities and the circular economy for sustainability

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