In the process of urban renewal, the high carbon emissions caused by pollution from construction waste and the consumption of materials and energy via “demolition and construction” present significant problems. Calculating carbon emissions and sinks is a prerequisite to carving out a low-carbon path via urban renewal. In this paper, we take an environmental improvement project in the Suzhou Industrial Investment Science and Technology Park as an example. Under the framework of the entire life cycle, we define the “renewal phase”, which includes “demolition” and “construction”, as the calculation boundary, and use the emission coefficient method as the primary calculation approach to assess carbon emissions and sinks. We construct a design-oriented carbon revenue and expenditure estimation system based on the BIM model. After its application in empirical cases, the results show the following: ① The building carbon emissions of Scheme A are 342 t higher than those of Scheme B, due to the fact that the “demolition and construction” works in the former increased by 6000 m² compared to the latter. ② The landscape carbon emissions of Scheme B are 269 t higher than those of Scheme A, due to the addition of a 2500 m² reinforced concrete overhead walking platform. ③ The annual carbon sink of Scheme A is six times higher than that of Scheme B, due to the fact that the number of trees and shrubs in the former is five-to-six times greater than in the latter. The number of trees planted plays a decisive role in enhancing the carbon sink benefit. ④ In the year during which the renewal project was implemented, the difference in carbon emissions between Scheme A and Scheme B was 72.9 t. By the 16th year, the difference in carbon emissions between the two schemes approached zero, and the carbon reduction advantages of Scheme A became more pronounced over the entire life cycle thereafter. Finally, this article summarizes four low-carbon design strategies for industrial park renewal projects: rational construction and demolition, three-dimensional parking, low-carbon materials, and plant carbon sequestration. In the context of inventory renewal, this article makes a significant contribution in terms of carbon footprint control and the “dual-carbon” goal.

Under global warming and rapid urbanization, understanding the link between residential spatial layouts and carbon emissions, considering microclimate effects, is crucial. Using the Local Climate Zone (LCZ) framework, this study selected 60 residential neighborhoods in Suzhou (hot summer and cold winter zone). A microclimate–neighborhood morphology coupling model was built by integrating the Urban Weather Generator (UWG) and Urban Metabolism-Induced Energy (UMI) model. The factor method was used to simulate energy use and carbon emissions of building clusters. The study systematically analyzed eight spatial form indicators, their influence on carbon emissions, and developed a predictive model. Main conclusions: (1) Carbon emission intensity ranks: LCZ6 > LCZ3 > LCZ5 > LCZ4 > LCZ2 > LCZ1. (2) Shape factor is positively correlated with carbon emissions across all LCZs, being the most stable and significant predictor. (3) Dominant factors vary by LCZ: sky view factor for compact high-rise (LCZ1); scattering degree for open high-rise (LCZ4); shape factor for compact mid-rise (LCZ2), open mid-rise (LCZ5) and open low-rise (LCZ6); no significant factor for compact low-rise (LCZ3). These findings can support low-carbon residential design, energy-efficient renovation of old neighborhoods, and optimization of residential evaluation standards.

This thesis is to analyze the basic pattern hierarchy of communication space by using the theory of environmental psychology and behavior combined with relevant principles in architecture, to evaluate the design and improvement of communication space in specific meaning, and to bring new observation ideas and innovation in design methods to the system of space, environment and behavior.