Regulation Effects and Parameterized Optimization of Urban Green-Space Vegetation Structure on PM2.5 Concentrations: A Case Study of Xi'an, China

It mainly includes on-site monitoring data, vegetation structure parameters, orthogonal experimental scenario design, and ENVI met simulation results. On site monitoring was conducted on typical urban green spaces in Xi'an, covering typical meteorological conditions in summer and winter, to analyze the differences in response of PM2.5 concentration to vegetation structure under different pollution backgrounds; Numerical simulation takes typical meteorological days during the peak leaf period as boundary conditions to analyze the effects of factors such as tree crown coverage, leaf area index, tree height, understory height, and species composition on PM2.5 concentration near human height.