| 基于遥感与地理信息系统的分布式斜坡稳定性定量评估模型 |
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| 引用本文： | 武利,张万昌,张东,周杰.基于遥感与地理信息系统的分布式斜坡稳定性定量评估模型[J].地理科学,2004,24(4):458-464. |
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| 作者姓名： | 武利 张万昌 张东 周杰 |
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| 作者单位： | 南京大学地球系统科学研究所,江苏,南京,210093;东南大学地理信息工程系,江苏,南京,210008;南京大学地球系统科学研究所,江苏,南京,210093;中国科学院地球环境研究所黄土与第四纪国家重点实验室,陕西,西安,710075 |
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| 基金项目： | 国家重点基础研究发展规划项目(2001CB309404)，中国科学院知识创新工程项目(KZCX1-06)，海外青年学者合作研究基金(40128001)，教育部科学技术重点项目(2001)。 |
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| 摘 要： | 文章介绍一种进行斜坡稳定性定量研究的分布式模型——SINMAP模型。该模型以水文学理论为基础，耦合稳定状态水文模型TOPMODEL与大范围斜坡稳定性模型，在充分考虑各种影响因素的基础上，对研究区域进行斜坡稳定性评价。选取汉江江口流域作为试验研究区，以DEM、遥感影象、各种专题图件及地面考察资料作为信息源，利用SINMAP方法获得可视化的研究区地表稳定性指数专题图。经实际资料检验表明，该模型可获取较高的预测精度，尤其在流域尺度上具有极大的应用价值。
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| 关 键 词： | 遥感与GIS 斜坡稳定性 SINMAP 大范围斜坡稳定性模型 稳定性指数 |
| 文章编号： | 1000-0690(2004)04-0458-07 |
Remote Sensing & GIS-Based Distributed Hillslope Stability:Quantitative Evaluation Model |
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| WU Li.Remote Sensing & GIS-Based Distributed Hillslope Stability:Quantitative Evaluation Model[J].Scientia Geographica Sinica,2004,24(4):458-464. |
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| Authors: | WU Li |
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| Abstract: | Natural disasters such as landslide and soil erosion are severe in China. Therefore, effective evaluation of slope stability further provides the warning for local/regional soil erosion, which is essential to the precise prediction and effective prevention of these catastrophes. Many approaches have been proposed in assessing slope stability and landslide hazards in the literature, the commonly-used approaches include (1) field inspection using a checklist to identify sites susceptible to landslides; (2) projection of future patterns of instability from analysis of landslide inventories; (3) multivariate analysis of factors characterizing observed sites of slope instability; (4) stability ranking based on criteria such as slope, lithology, landform, or geologic structure; and (5) failure probability analysis based on slope stability models with stochastic hydrologic simulations. Each of these is valuable for certain applications. None, however, takes full advantage of the fact that debris flow source areas are, in general, strongly controlled by surface topography through shallow subsurface flow convergence, increased soil saturation, increased pore pressures and shear strength reduction. In this study, a distributed modeling scheme based on digital elevation model (DEM), takes advantage of geographic information system (GIS) and remote sensing information coupling with the Infinite Slope Stability Model to quantify topographic attributes related to slope instability and landsliding so as to mapping the hillslope stability entitled as SINMAP was introduced in detail, and its application to a 2431 km~2 watershed in Shanxi Province was conducted and tested with the discussion of the field observations. The experimental application indicated its good applicability and operational value in quantitative evaluation of surface stabilities in basin scale areas. |
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| Keywords: | remote sensing GIS hillslope stability SINMAP Infinite Slope Stability Model Surface Stability Index |
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