Adapting to climate change and controlling carbon emissions have emerged as significant challenges faced by the international community. The high-quality pedestrian space system of TOD blocks, as an important means for carbon reduction and carbon sink increase in cities, showcases the effect of green intensification and low-carbon sustainable urban space development. In this study, by combining the research on low-carbon block creation and urban microclimate, focusing on the technical process of the three stages of pre-treatment, core calculation, and post-treatment, comprehensively considering the three elements of microclimate, namely wind, heat, and carbon, and their influencing parameters, and introducing a CFD simulation method for porous media, a CFD simulation technology framework for microclimate improvement in urban design is constructed. Through the spatial visualization of the software solution calculation results and the correlation and comparative analysis of the measured data, we quantitatively analyze the coupling relationship between the block morphology and the comprehensive environment of wind, heat, and carbon. The research results indicate that by rationally adjusting indicator elements such as the height-to-width ratio of streets and entrance forms, it is possible to effectively facilitate cooling, ventilation, and air circulation within blocks and dilute the CO₂ concentration. Finally, from the urban design element systems at the micro, meso, and macro levels, the adaptive planning strategies in the three dimensions of the spatial form, constituent elements, and planning guidelines of TOD blocks are summarized and refined, with the aim of achieving the low-carbon transformation of cities through the creation of a healthy microclimate environment.

Adapting to climate change and controlling carbon emissions have emerged as significant challenges confronted by the international community. The high-quality pedestrian space system of TOD neighborhoods, as an essential means for carbon reduction and sink enhancement in cities, has exhibited a demonstration effect of green intensification, low-carbon sustainability in urban spatial development. The intersectional research of low-carbon block creation and urban microclimate was conducted, along with microclimate simulation (CFD) calculation of the pedestrian space morphology of typical TOD neighborhoods in Qingdao. The correlation between the simulation experiment results and the measured data was compared and comprehensively evaluated to quantitatively analyze the coupling relationship between the block morphology and the comprehensive microclimate environment of wind, heat, and carbon. Summarize and extract the adaptive planning strategies of TOD block space for low-carbon purposes, aiming to realize the low-carbon transformation of cities through the creation of a healthy microclimate environment.