This paper questions how the implementation of the circular economy actually takes place and evolves over time, using the geographical example of the Amsterdam Metropolitan Area. This particular practice-oriented, regional focus is underexposed in the literature. Relying upon transition management literature, the analysis shows through five years' action-research that a pipeline of tailor-made circular initiatives, all at varying speeds, was created and when successful, scaled up. This is visualised in a ‘practice-based model for implementing circular economy’, which specifies the four-phase model by Rotmans et al. (2001). By developing a scheme which represents the activities needed in each phase of the implementation process, Loorbach's transition management cycle (2010) could be refined. Contrary to what Loorbach suggests, these activities largely follow not only a sequential order, but are also cyclic. Studies on similar initiatives in other regional contexts will allow for generalisation of the results gained in the study presented here.

本文以阿姆斯特丹都市圈的地理示例为例，对循环经济的实施实际上是如何发生和演变的提出质疑。这种特殊的，以实践为导向的区域性重点在文献中并未得到充分曝光。根据过渡管理文献，该分析通过五年的行动研究表明，创建了量身定制的循环计划管道，这些管道的速度各不相同，并且在成功的情况下得以扩大。这在“实施循环经济的基于实践的模型”中可视化，该模型指定了Rotmans等人的四阶段模型。（2001）。通过制定一个代表实施过程中每个阶段所需活动的计划，可以完善Loorbach的过渡管理周期（2010年）。与卢尔巴赫的建议相反，这些活动在很大程度上不仅遵循顺序，而且是周期性的。在其他区域范围内对类似举措的研究将使本文介绍的研究结果得以概括。