“湾区”通常是指由分布在沿海周边的许多海港和城镇组成的港口群和城镇群，其产生的经济效应称为“湾区经济”。纵观世界，“湾区城市群”已成为世界经济发展的重要增长极，也是国际竞争特别是科技创新的新载体。正是在这样的背景下，“粤港澳大湾区”应运而生，准确把握国际竞争的新焦点是中国的前瞻性战略。
世界各国的湾区城市群都聚集了大量人口，并且是最大的资源和能源消费区域。因此，面向可持续未来的过渡从根本上取决于城市系统从线性到循环、从碳密集到碳中和的转变。城市转型需要汲取科学、技术和管理创新能力，以及人口经济规模在空间上的集中所带来的机遇，这为探索新的低碳发展和循环经济以及新的生态型社会经济发展模式创造了充分条件，也面向新形势的生态环境治理提供了变革的动力和包容性的试验空间。
为了更好地了解湾区城市群在向循环经济和碳中和过渡中如何作为推动者的角色领导转型，拟于2021年7月27-31日期间在澳门召开第二届湾区循环经济与碳中和国际会议“面向碳中和的湾区城市群绿色转型”，为探讨湾区城市群在循环经济、碳中和和绿色转型等方面的理论方法、技术创新和管理实践搭建一个学术交流平台。
“Bay Area” usually refers to the port group and town group formed by many seaports and towns distributed around coastal ports, and the economic effect derived is called “Bay Area Economy”. Looking at the world, the “Bay Area urban agglomeration” has become an important growth pole for world economic development, and it is also a new carrier for international competitiveness, especially for innovation. It is in this context that “Guangdong-Hong Kong-Macao Bay Area District” emerged as the times require, and it is China’s forward-looking strategy to accurately grasp the new focus of international competition.
Bay area urban agglomeration concentrate most of the world’s population and are the largest consumers of resources and energy. The transition towards more sustainable futures thus fundamentally depend on the transformation of urban systems from linear to circular and from carbon intensive to carbon neutral. Urban transitions need to draw from the scientific, technical, and managerial innovation capabilities of cities and from opportunities derived from the spatial concentration of population and economy, which create adequate conditions to explore new low carbon and circular business and socio-economic models. In addition, bay area also provides the understanding of the dynamics of the transformation and creates inclusive spaces for experimentation to face the new forms of ecological environmental governance.
In order to better understand how to be a role leader in the circular economy, carbon neutral and green transition, the 2nd International Conference on Bay Area Circular Economy and Carbon Neutral: “Carbon neutral oriented Bay Area Urban Agglomeration Green Transitions”, is proposed in Macao from July 27-31 to set up an academic exchange platform for exploring the theoretical method, technical innovation and management practice of the bay city agglomeration in the circular economy, carbon neutral and green transformation.