Coastal erosion risk assessment of sandy coast based on GIS and RS

In view of coastal erosion characteristic, the evolution rule, the land or the tidal flat loss as well as the existent risk situation and so on of soft nature key coastal section in our country, we cut in the research from the risk, the vulnerability and the risk-resisting ability. Comprehensively taking into account the overall evaluation natural factor and the human factor, combining with the distinctive quality of seacoast multiplexed system, screening the evaluating indicator, we make certain the evaluating criteria and construct the coastal erosion risk assessment method system, establish the synthesis judgment model. At the same time, taking the QinHuangDao gold coast as the example, we have carried out the coastal erosion risk quantified assessment and drawn up the coastal erosion risk evolution map, analyzed and discussed the coastal erosion disaster risk assessment result, the measure results and the actual basically matched.