“低碳”与“集约”双重约束下我国城市建设用地利用效率研究：测度与优化

The low-carbon and intensive use of urban construction land (UCL) drive China’s sustainable land use and transition to a low-carbon economy. This study aims to optimize the efficiency of UCL use from a perspective of "low-carbon" and "intensive". First, this study will reveal the coupling mechanism of low-carbon goals and intensive goals together acting on China’s UCL using methods such as input-output analysis and complex network theory. Based on the mechanism, this study will establish a model to estimate the efficiency of UCL use under "low-carbon" and "intensive" constraints. This study will then identify the factors influencing UCL use efficiency and establish a model that simulates the combined effects of these factors. With such a model, this study will conduct scenario simulations to clarify current issues needing improvement in the pilot low-carbon cities in China. Then, policy implications will be proposed to optimize the efficiency of UCL use. The research outcomes, on the one hand, could enrich the theoretical knowledge system of the existing framework of efficiency analysis and provide a novel approach and paradigm for the research on the efficiency of UCL. On the other hand, it could also provide government departments with practical strategies and references for optimizing the efficiency of UCL use.

城市建设用地作为经济社会活动的空间载体，其低碳集约利用是实现我国土地资源可持续发展和低碳经济转型的重要引擎。本课题旨在从低碳集约双重视角优化城市建设用地利用效率，基于投入产出分析方法和复杂网络理论等理论方法，揭示城市建设用地低碳目标和集约目标的耦合机理，以此为基础构建低碳集约双重约束下城市建设用地利用效率测度模型，通过系统识别建设用地利用效率影响因素，建立能反馈因素交互作用的建设用地利用效率影响机制模型，并借助模型应用与仿真模拟手段，对我国典型低碳试点城市进行多情景模拟以明晰存在问题，进而提出建设用地利用效率优化策略。研究成果一方面丰富和发展了现有效率分析框架的理论知识体系，为建设用地利用效率有关研究提供新的研究思路和范式，另一方面为政府部门制定切实可行的建设用地利用效率优化策略提供有益借鉴。

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