Study on risk assessment model of urban drought in Hilly Area of Central Sichuan Basin

2009 17th International Conference on Geoinformatics Pub Date : 2009-10-23 DOI:10.1109/GEOINFORMATICS.2009.5293488

L. Jiang, Youlong Zhai, Bin Zhang, Chengqiang Shu, Lili Wang

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Abstract

This drought, especially for city seriously affects the social and economic development of city. Drought is characterized by their high frequency, broad range and great loss. Nanchong city is one of the major cities with drought in Hilly Area of Central Sichuan Basin. This study presents a model of risk assessment of urban drought which integrates hazard, exposure, vulnerability and emergency response and recovery capability in Nanchong city, by using the technology of natural disaster risk assessment, weighted comprehensive analysis and analytic hierarchy process and. On the basis of research on the intension and the cause of the drought risk, this study sets up the mathematical model for the drought risk assessment and then use this model to calculate the intensity of drought risk of Nanchong city in Hilly Area of Central Sichuan Basin from different perspective. The risk map of urban drought is drawn based on GIS. This study can be expected to provide solid theories and technological supports for taking comprehensive and active measurements to fight drought in Nanchong city.

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川中丘陵区城市干旱风险评价模型研究

这种干旱，特别是对城市来说，严重影响了城市的社会经济发展。干旱具有频率高、范围广、损失大的特点。南充市是川中丘陵区主要的干旱城市之一。运用自然灾害风险评估、加权综合分析和层次分析法等方法，建立了南充市城市干旱风险评估模型，该模型集灾害危险性、暴露性、脆弱性和应急响应与恢复能力于一体。在研究干旱风险强度和成因的基础上，建立了干旱风险评估的数学模型，并利用该模型从不同角度计算了川中丘陵区南充市的干旱风险强度。基于GIS绘制了城市干旱风险图。本研究可为南充市采取综合、积极的抗旱措施提供坚实的理论和技术支持。

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2009 17th International Conference on Geoinformatics

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