基于遙感與GIS的城市公共安全評價(jià)方法研究
[Abstract]:With the rapid development of social economy and the improvement of urbanization level, the problems and hidden dangers of urban public safety appear day by day. It is of great significance for the future construction and healthy development of the city to carry out the evaluation of urban public safety and take corresponding measures of rectification and reinforcement to ensure the stable life and production order of the city and the safety of the life and property of the urban public. Based on remote sensing and GIS technology, a comprehensive evaluation index system of urban public safety is constructed based on capability and vulnerability. Taking Xiamen as an example, the process and results of urban public safety evaluation are preliminarily analyzed and demonstrated. From remote sensing image, statistical yearbook data, electronic newspaper, online electronic map and other multi-source data, the paper extracts the evaluation index of urban public safety: (1) using high-resolution remote sensing image to extract floating population, road network, water system, etc. (2) extracting other indexes from yearbook statistics, electronic newspapers, online electronic maps and so on. By referring to the methods of weight assignment in previous studies, the weights of each index are assigned. At the same time, the frail 3 score pattern map. Table 3-7 Flood vulnerability rating Standard Tab.3-7The scoring standard of the vulnera City Public Safety Index pattern Chart. Compared with the traditional evaluation index of urban public safety, only a single numerical value can be obtained. This study has realized the evaluation of urban spatial pattern, and the public safety index pattern map can directly reflect the difference of public safety index in each region of the city. The location of vulnerability was found. The source of data is more extensive than the traditional method, and the GIS technique is used to overcome the disadvantage of traditional research which is not conducive to multi-source data fusion analysis. In this study, the evaluation of urban public safety model is realized on the platform of ArcGIS9.3. The application of remote sensing image and GIS to urban public safety evaluation has certain reference significance for the future study of urban public safety evaluation.
【學(xué)位授予單位】:福建師范大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:D63;P208
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