| 基于GIS的安徽省洪涝灾害风险区划研究 |
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| 引用本文： | 顾留碗,王春,李伟涛,魏守月.基于GIS的安徽省洪涝灾害风险区划研究[J].安徽农业科学,2011,39(27):16619-16621,16683. |
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| 作者姓名： | 顾留碗 王春 李伟涛 魏守月 |
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| 作者单位： | 滁州学院地理信息与旅游学院,安徽滁州,239000;滁州学院地理信息与旅游学院,安徽滁州,239000;滁州学院地理信息与旅游学院,安徽滁州,239000;滁州学院地理信息与旅游学院,安徽滁州,239000 |
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| 基金项目： | 安徽省教育厅自然科学基金(KJ2010B422) |
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| 摘 要： | 目的]研究基于GIS的安徽省洪涝灾害风险区划。方法]以县域为基本单元,以安徽省1∶25万基础地理数据为基础,从洪涝灾害危险性和经济易损性2个角度出发,采用基于熵权的模糊层次分析法计算各因子的权重,建立洪涝灾害风险评估模型,研究安徽省洪涝灾害风险性区划,并利用近10年的安徽省灾情资料对风险评估结果进行精度检核。结果]安徽的洪涝灾害风险区域性差别较大,洪涝灾害风险最为严重的地区在阜阳临泉、淮北灵璧一带,风险程度由皖北平原向皖南山区和皖西大别山区地区逐次降低、由淮北平原向江淮丘陵、皖南山区逐次降低。近10年的安徽省灾情资料统计显示,经济损失严重的地区主要位于淮北平原南部的灵璧、固镇、淮南等地区;而农作物受灾面积损失严重的地区主要分布于淮北平原的砀山、萧县等地区,另外皖西大别山区的金寨等地区农作物受灾面积损失也较为严重,其余地区受灾面积较小;受灾人口的分布与农作物受灾面积的分布基本一致。可见,基于GIS的安徽省洪涝灾害风险评估与实际情况基本一致。结论]基于GIS的洪涝灾害风险区划分析方法具有较好实用性。
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| 关 键 词： | GIS 洪涝灾害 风险区划 安徽省 |
GIS-based Risk Zoning of Flood Hazard in Anhui Province |
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| GU Liu-wan et al.GIS-based Risk Zoning of Flood Hazard in Anhui Province[J].Journal of Anhui Agricultural Sciences,2011,39(27):16619-16621,16683. |
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| Authors: | GU Liu-wan |
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| Institution: | GU Liu-wan et al(School of Geographic Information and Tourism,Chuzhou University,Chuzhou,Anhui 239000) |
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| Abstract: | Objective] The aim was to study the flood disaster risks in Anhui Province based on GIS.Method] Taking country as basic unit,the 1∶ 250 000 basic geographic data in Anhui Province as basis,from the angle of flood disaster hazard and economic vulnerability,by dint of the calculation of the weight of each impact factor with entropy-based fuzzy AHP method,flood risk assessment model was established to study the flood disaster risks zoning in Anhui Province.And using nearly 10 years of disaster information in Anhui Province,the flood risk zoning of Anhui Province was studied.And the risks evaluation results of flood disaster risks in Anhui Province in recent 10 years were checked.Result] The regional difference of flood disaster in Anhui Province was large.The most serious area of flood disaster was in Lingquan in Fuyang and Lingbi in Huaibei.The risks degree degraded from south mountainous area in north Anhui Plain to the mountainous area of west Anhui Province,from Huaibei Plain to the hilly area of Jianghuai and mountainous area of south Anhui Province.The disaster situation in Anhui Province in recent 10 years suggested that the areas suffering serious economic losses were in Lingbi,Guzheng and Huainan in the south part of Huaibei Plain.The places having serious agricultural crops damages were in Tangshan and Xiao County in Huaibei Plain.Besides,the Jingzhai area in the Dabieshan in west Anhui Province also had serious agricultural crops in Jinzhai.Other places had limited disaster-stricken impacts;the distribution of disaster-stricken population and impacted area of agricultural crops were basically consistent.Therefore,the risk evaluation of flood disaster of Anhui Province based on GIS was basically consistent with reality.Conclusion] This GIS-based flood risk zoning method has good practicability. |
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| Keywords: | GIS Flood and water-logging disaster Risk zoning Anhui Province |
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