| 基于高分一号卫星的江西樟树市地质灾害评价 |
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| 引用本文： | 于博文,田淑芳,罗昌繁,饶凌志,杨竹.基于高分一号卫星的江西樟树市地质灾害评价[J].测绘科学技术学报,2017(5):514-518,524. |
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| 作者姓名： | 于博文 田淑芳 罗昌繁 饶凌志 杨竹 |
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| 作者单位： | 1. 中国地质大学(北京)土地科学技术学院,北京,100083;2. 中国地质大学(北京)地球科学与资源学院,北京,100083;3. 江西省地矿局赣南地质调查大队,江西赣州,341000;4. 河北农业大学林学院,河北保定,071000 |
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| 基金项目： | 中国地质调查局地质调查项目(121201203000160009)，江西省国土资源厅项目(DLDS2016-C014-1) |
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| 摘 要： | 运用高分一号卫星进行江西樟树市地质灾害评价对于科学防治地质灾害,提高国产卫星应用水平具有重要意义。本文通过正射校正、影像融合、几何校正等步骤对高分一号影像进行预处理,然后对处理后的影像进行地质灾害解译,获取樟树市地质灾害分布情况。在进行地质灾害评价过程中采用小流域评价单元,选取灾害点密度、地表水文、构造断裂带、工程活动、岩土类型、地形坡度等6个评价因子,并运用层次分析法确定因子权重,通过加权平均法最终获得樟树市地质灾害易发性综合评价图,其精度为78%。结果表明樟树市易发生地质灾害的地区占全市总面积的34.68%,易发程度最高的地区主要分布在东南部,占全市总面积的7.82%。
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| 关 键 词： | 高分一号卫星 地质灾害评价 层次分析法 几何校正 融合 |
Geological Hazard Assessment of Jiangxi Zhangshu Based on GF-1 |
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| Abstract: | It's important to evaluate geological hazard of Zhangshu by using GF-1 satellite for preventing geological hazard scientifically and improving the application level of domestic satellites.The images were processed by ortho rectification,image fusion and geometric correction and then the distribution of geological hazards were generated by interpretation of these images.Small watershed evaluation unit was used to evaluate geological hazard and then disaster point density,surface hydrology,tectonic fault zone,engineering activity,rock and soil type and terrain slope were choosen as the evaluation factors.AHP determined the weight of factors and weighted average method produced the comprehensive evaluation map of geological hazards.The accuracy of the result is 78％.The result shows that the zone with high degree of danger is mainly distributed in the southeast of Zhangshu,accounting for 7.82％ of the total area.The zone has a venture to get a geologic hazard in 34.68％ of the whole city. |
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| Keywords: | GF-1 geological hazard assessment AHP geometric correction pansharp |
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