Application of Geological Hazard Risk Assessment in Territorial Space Planning: A Case Study of Gaoxigou Village in Yulin City of Northern Shaanxi Province

Gaoxigou village of Mizhi county in Yulin city, is located in the hilly and gully region of the Loess plateau. It is a geological disaster prone area. Therefore, it is of great importance to consider the risk of geological disaster in territorial space planning. Based on geological disaster survey data, evaluation indexes such as slope, slope aspect and geological disaster development density were selected, the information quantity model was used to evaluate the risk with slope element, on this basis, the vulnerability of disaster bearing body was superimposed for quantitative risk assessment, and delineated risk zones of geological disasters. Using ArcGIS, the risk zoning of geological disasters and current functional areas were superimposed, and Gaoxigou was reconstructed into four territorial space zones: medium risk in geological hazards–living area, low risk in geological hazards–ecological functional area, low risk in geological hazards–agricultural production area, and ravine region, and put forward the territorial space optimization strategy.