养分循环代谢的城市可持续社区探析

Research on Urban Sustainable Community Based on Circular Metabolism of Nutrients

在当前城市面临的种种困境里,养分线性代谢是一个日益严重却被长期忽视的问题,构建新的城市养分代谢系统、重新闭合养分循环是一个必要措施。本文以马克思"代谢断层"理论为切入点,分析城市养分自然循环过程遭受破坏后带来的代谢失衡等严重后果;从社区层面入手,把社区代谢废物视为可以循环利用的养分资源,关联废弃物、肥料、农业、食物及居民等诸多要素,促进形成社区内部递进往复的养分循环过程,以修补代谢断层。本文以鄂尔多斯郝兆奎社区为例,将农业要素融入社区空间,重构社区基础设施,循环利用社区代谢废物,解析在社区尺度实现城市养分闭合循环的作用机理,并介绍相关的可持续社区规划理念,以期为我国快速城市化背景下的城市可持续社区发展提供有益的启示。

Currently, the global nutrient crisis has developed to a rather critical situation that cannot be ignored. Hence, constructing a kind of new urban. nutrient-metabolism system and reclosing the nutrient-cycling have become an indispensable strategy. Based on the theory of Metabolic Rift, this paper analyzes the serious consequences of metabolism imbalance and treats the metabolic waste as nutrient resources that can be recycled. Associating various factors, such as the waste, fertilizer, agriculture, food and people, the process of nutrient recycling will be promoted and the Metabolic Rift can be eliminated. Taking the Haozhaokui Community as an example, this paper analyzes the mechanism of achieving nutrient recycling and introduces the design ideas of relating sustainable community, so as to provide Chinese sustainable community development with new approaches and new methodologies.