To address the issues of time delay in the actual response of adjustable loads and inter-park differences in the coordinated dispatch of multi-park microgrids, propose a low-carbon economic dispatch method considering the spatiotemporal asynchronous response of adjustable loads. First, a coordinated dispatch model for a cluster of multi-park microgrids is constructed, including wind power, photovoltaic generation, energy storage, gas turbines, and adjustable loads. Next, the adjustable loads are classified into shiftable loads, transferable loads, and curtailable loads, and stochastic variables are used to characterize their actual response delay characteristics. On this basis, by incorporating inter-park power interaction, electricity purchasing and selling with the main grid, and the carbon trading mechanism, a low-carbon economic optimization model for the multi-park microgrid cluster is established. Finally, simulation analysis is carried out based on a case study of three parks. The results show that the proposed method can effectively improve renewable energy accommodation and inter-park energy mutual support capability, while reducing the system electricity purchasing cost, energy storage operation cost, and gas turbine operation cost. Compared with the scheme that does not consider the spatiotemporal asynchronous response of adjustable loads, the proposed method reduces the overall system operating cost by 8.18% and further decreases carbon emissions.