Low-Carbon Renewal and Thermal Environment Optimization for High-Density Cities: A Case Study of Beijing
Abstract
units has become a key approach to differentiated urban renewal. Traditional extensive heat island regulation can hardly meet climate-resilient
construction demands. Taking Beijing's Fifth Ring Road built-up area as the case, this paper uses multi-source spatial data for quantitative
analysis, and reveals the nonlinear coupling mechanism among landscape pattern, building form and land surface temperature. Results show
21%23% building density (BD) is the core warming-to-cooling transition range, with 20%40% BD as the optimal interval; 27.7% building porosity (BP) is the basic threshold, 93%95% BP the stable high-efficiency cooling range, and BP in high-density areas must be capped
at 95%. Tree cooling is far better than grass, with stable antagonistic effects even at medium-low coverage in medium-to-high-density areas.
Based on these findings, this paper constructs a "dual-carbon orientationspatial controlscenario implementation" framework, proposes a
four-dimensional strategy system, and verifies it with typical cases. Conclusions provide theoretical and practical references for low-carbon
resilient renewal in Beijing and similar global high-density cities.
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DOI: http://dx.doi.org/10.70711/frim.v4i5.9381
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