To further explore the specific application of nonlinear system in the construction of landscape architecture and promote the parametric development of landscape design, in this exploration, based on the digital elevation model (DEM) and nonlinear algorithm theory, the road selection scheme using cost distance algorithm and path distance algorithm is explored. The results suggest that there are obvious differences between cost distance algorithm and path distance algorithm in the consideration of parameters in use. The path distance algorithm needs to further consider the influence of surface grid and vertical system parameters. Environmental factors and different classification methods have great influence on road selection. When the limit value is greater than ±30∘, there is no obvious change in road selection. However, when SLOPE values are 15∘, 30∘ and 45∘, respectively, the difference in road selection is small, and the application effect is good. This exploration can provide the sufficient reference for the follow-up study of landscape road selection.
