Abstract
With the advancement of urbanization and the impact of industrial pollution, the issue of urban ventilation has attracted increasing attention. Research on urban ventilation corridors is a hotspot in the field of urban planning. Traditional studies on ventilation corridors mostly focus on qualitative or simulated research on urban climate issues such as the intensified urban heat island effect, serious environmental pollution, and insufficient climate adaptability. Based on the high-precision urban remote sensing image data obtained by aeromagnetic oblique photography, this paper calculates the frontal area density of the city with reference to the urban wind statistics. Based on the existing urban patterns, template matching technology was used to automatically excavate urban ventilation corridors, which provides scientific and reasonable algorithmic support for the rapid construction of potential urban ventilation corridor paths. It also provides technical methods and decision basis for low-carbon urban planning, ecological planning and microclimate optimization design. This method was proved to be effective through experiments in Deqing city, Zhejiang Province, China.
Highlights
If a terrain feature point only refers to the elevation of the ground point, this digital terrain description can be called a digital elevation model (DEM)
This paper used the difference between the digital surface model (DSM) and DEM to extract the height of the surface roughness of buildings, rivers, lakes, and vegetation [18]
Taking the frontal area density as the main calculation factor, thefrontal lengtharea of the urban ventilation corridor refers to the continuous length of the value of the density ventilation refers to thethe continuous the valueasofthe theempirical frontal area density interval
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Based on an urban spatial data model, the method of using computer analysis technology to assist in the planning and design of ventilation corridors has a low cost and short cycle It can be evaluated by parameter research via setting conditions, which will play an important role in supporting decisions to improve the overall ventilation efficiency of a city. Zhang extracted high-resolution urban geographic information data and used RS and GIS integration to collect surface information and spatial information on the downtown area of Jinzhong, obtaining an urban roughness pattern map of the downtown area [17] Speaking, these studies lack in-depth discussion of the detailed urban form. The experimental results show the effectiveness of this research method
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