The Road Network Optimization Of Hill City Based On Water System

The hilly city is in the terrain and dense water network area. The road is not only the extension of urban development, but also influential in the function. Current research is mainly concentrated on the qualitative summary for protection of urban ecological, the study did not according to different level drainage structure. The road is affecting the distribution pattern of human activity and water surrounding the change of land cover. Previous studies mostly focused on the ecological effect analysis of a single road or the road to the influence of channel flow. Tend to neglect the influence of different level road of overland flow and lack of water protection.This paper expounds the road changes of ecological environment in the process of urbanization and the influence of drainage structure and the background of the research. Drawing water system protection and road construction related density of road network, the construction cost, catchment line level, connection degree. The research based on water system protection and the urban road network optimization. Through ARCGIS Spatial Analyst module, AHP, Urban ecological water network connection degree and Case-based reasoning theory put forward the network structure design, road line selection range and road vertical node ecological design. Using the urban ecological water network connection degree, the urban road network construction cost to build "water system protection and road network optimization model". The example proves the scientific nature and operability of the model.Urban development need to explore contact with drainage, road network and urban ecological water network connection degree, the urban road construction costs. Research results can be used in the hilly city road construction and provide the decision-making for the hilly city road network planning, The model is of great significance to promote city ecological construction...