As the main field for carbon emission reduction, megacities play a key role in the green transformation process. Based on the dual challenges of high-quality development and "Dual-Carbon" goals of megacities, this paper focuses on the two levels of carbon reduction and carbon fixation, systematically builds the method for the target of "Carbon Peak and Neutrality" with the joint promotion of energy transformation and resources efficiency as well as the mutual support of carbon sequestration technology innovation and ecological carbon sink, carries out the strategy research based on the low-carbon transformation of energy structure, resilient development of urban upgrade, quality improvement of ecological system and green reconstruction of transportation system, and aims to provide valuable reference in regard of the promoting low-carbon development of megacities and realizing the national strategic goal of "Dual-Carbon".

carbon neutrality  /  energy transition  /  resource efficiency improvement  /  urban renewal