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对地理信息系统在评估过程中的作用进行了详细阐述,着重强调了GIS强大的数据管理、空间分析和空间量算功能在滑坡信息分析中的作用。基于模糊综合评判模型,进行了滑坡风险评估地理信息系统的设计与实现。针对地形地貌、地质条件、气候条件、水文条件、植被条件、人为活动、人口密度、工程设施和土地利用等信息,按致灾指标提取与分析、承灾指标提取与分析、灾害风险评估和灾情制图的步骤,实现了滑坡灾害风险评估的信息化目标。以四川省青川县窝前滑坡为例,应用该系统计算出其危险度为0.49,易损度为0.067,风险度为0.033。 更多还原

【Abstract】 Risk assessment on the instable single landslide in an area of human activities will provide scientific basis for establishing prevention plan,mitigation programs and deployment of control projects.This paper discusses the application of GIS in the assessment in details,emphasizing the powerful data management,spatial analysis and spatial calculation functions of GIS.The decision support system for landslide disaster risk assessment is designed and realized based on fuzzy comprehensive evaluatio... 更多还原