关键词: Circular economy City clusters Symbiotic network Waste disposal capability

Mesh : Cities Rivers Symbiosis Refuse Disposal / methods Waste Management / methods China

来  源:   DOI:10.1016/j.jenvman.2022.117166

Abstract:
With the ongoing urbanization in developing regions, integrating regional waste disposal capability is challenging due to unbalanced economic development and rising environmental issues. This research proposed a multi-dimensional symbiotic integration of waste disposal capability. Applying data from the Yangtze River Delta (YRD) in China, we first explore the waste flows and interactions between cities to identify the possibility of inter-municipal collaboration based on the augmented gravity model. We then employ social network analysis to categorize the cities in the collaborative network of waste disposal into subgroups by functionalities. Finally, we proposed the top-down framework of symbiotic networks for waste disposal. Our findings indicate that YRD cities can be classified into four types according to their waste density and disposal efficiency: High-High, Low-High, Low-Low, and High-Low. We also identify three types of inter-municipal collaborative relationships: between high-density and high-efficiency cities, between high-density cities, and between high-efficiency cities. The city subgroups can be categorized into \"high-efficiency clusters,\" \"high-density clusters,\" and \"hub clusters,\" which pave the way for a shared or complementary urban symbiosis in the waste recycling industry. The division of roles among subgroups enables symbiotic activities within the city cluster. This paper extends the spatial scope of industrial symbiosis literature and has practical implications for transitioning to a circular economy in waste management of developing countries.
摘要:
随着发展中地区城市化进程的不断推进,由于经济发展不平衡和环境问题日益严重,整合区域废物处理能力具有挑战性。本研究提出了一种多维共生整合的垃圾处理能力。应用中国长江三角洲(YRD)的数据,我们首先探索城市之间的废物流动和相互作用,以确定基于增强重力模型的城市间合作的可能性。然后,我们采用社交网络分析将废物处理协作网络中的城市按功能分类为子组。最后,我们提出了自上而下的废物处理共生网络框架。我们的发现表明,根据废物密度和处置效率,YRD城市可以分为四种类型:高-高,低-高,低-低,高-低。我们还确定了三种类型的城市间协作关系:高密度和高效城市之间,在高密度城市之间,高效城市之间。城市子组可以分为“高效集群”,\"\"高密度集群,\"和\"集线器群集,“这为废物回收行业的共享或互补城市共生铺平了道路。子组之间的角色划分可以实现城市群内的共生活动。本文扩展了工业共生文献的空间范围,对发展中国家废物管理向循环经济过渡具有实际意义。
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