基于污染物扩散模拟的景观园林布局优化模式设计研究

Optimization of Landscape Architecture Layout based on Pollutant Diffusion Simulation

为了在减少空气污染的同时优化园林景观布局,提出基于污染物扩散模拟的景观园林布局优化模式设计方案。将风向风速、地表条件、大气稳定性等作为影响污染物扩散的因子,利用点源高斯模型建立坐标系。分别构建气态污染物与颗粒污染物的污染扩散模拟模型;利用马尔科夫状态转移概率矩阵描述景观布局种类的面积比,构建布局优化变换函数并建立演变模型,获得布局变化规律函数,完成景观园林布局优化模式设计。实例研究结果表明,在所设计优化模式下,减少了测试区域的污染物扩散面积,缩短了污染扩散时间,提高了空气质量。

In order to optimize the layout of landscape architecture while reducing air pollution,a landscape architecture layout optimization model design scheme based on pollutant diffusion simulation was proposed.Taking wind direction,wind speed,surface conditions,and atmospheric stability as influencing factors for diffusion of pollutants,a point source Gaussian model is used to establish a coordinate system.The study builds pollution diffusion simulation models for gaseous pollutants and particulate pollutants respectively.The Markov state transition probability matrix is used to describe the area ratio of landscape layout types and construct a layout optimization transformation function.A evolution model is established to obtain the layout change rule function,and complete the landscape garden layout optimization mode design.The case study results show that under the designed optimization mode,the pollutant diffusion area in the test area is reduced,the pollution diffusion time is shortened,and the air quality is improved.