摘要
以对地质灾害隐患点进行风险评价和管理为目的,选择灾害易发程度、受威胁人口数、威胁基础设施的数量和等级为评价指标,利用数据包络分析方法(DEA)中的CCR模型对位于广州市萝岗区的崩塌地质灾害隐患点的风险大小进行排序和分组,并对结果的合理性进行验证分析。研究表明,运用DEA方法的CCR模型并选择合理的评价指标对地质灾害风险进行评估,能够便捷地得到较为理想的评价结果,可以避免和减少主观因素的干扰。但在使用DEA方法评估地质灾害隐患点风险时有必要对结果进行检验,以确保其合理性。同时,研究发现该方法也可用于其它类型灾害的风险评价和管理。
In order to achieve efficient risk assessment and potential geologic hazard management,the hazard susceptibility index,the amount of population and infrastructure threaten by hazard are chosen as evaluating indicators to calculate the risk grades of the potential landslides in Luogang District by using the DEA-CCR model,and the relative importance values of risk are arranged and classified.The reasonableness of the results is tested.It is shown that the DEA-CCR model is useful in risk assessment of the potential geological disaster by means of choosing sound indicators.This method would help avoid or minimize subjective judgement in the risk assessment,but reasonableness test is necessary in practice.Additionally,DEA is also useful in other types of risk assessment and management.
出处
《热带地理》
北大核心
2011年第2期159-163,共5页
Tropical Geography
基金
广东省科技计划重点项目(2008A030203003)
广东省自然科学基金团队项目(04201163)
