基于生态环境决策的城区规划设计研究——以南宁市五象新区为例

Research on urban olanning and design based on ecological environment decision——A case study of Wuxiang New Area in Nanning

利用Landsat8数据,分析了南宁市五象新区的植被覆盖情况及热场分布情况,通过计算流体动力学(Computational Fluid Dynamics,CFD)模型分析了五象新区风场分布情况。在此基础上,开展了基于生态环境决策的城区规划设计实验。结果表明,通过修改建筑布局,可使五象新区过风面积提升2.5%,同时修改建筑布局及城市下垫面,过风面积可提升9.7%。与原设计相比,基于生态环境决策的五象新区规划设计可以极大提高城市内部的通风效果,显著提升了居民的体感舒适度。

Based on Landsat8 data and the Computational Fluid Dynamics(CFD) model, the vegetation coverage and thermal field distribution, and the wind field distribution in Wuxiang New District of Nanning City were analyzed respectively. On this basis, this research carries out an experiment on urban planning and design based on ecological environmental decision-making. The results show that the wind-passing area in Wuxiang New District can be increased by 2.5% by modifying the building layout. But the wind-passing area can be increased by 9.7% by modifying the building layout and the urban underlying surface at the same time. Therefore, the planning and design of Wuxiang New District based on ecological environmental decision-making can greatly improve the ventilation effect in the city and significantly enhance the physical comfort of residents compared with the original design.