基于粗糙集和WebGIS的农产品质量安全应急管理系统

Farm Products Quality Safety Emergency Management System Based on Rough Set and WebGIS

针对农产品质量安全事件的特点,利用粗糙集方法,通过对10个样本案例进行属性分析与约简,确定了危害源毒性、影响范围、死亡人数、伤害人数和人口密度5个农产品质量安全事件等级综合评价指标,通过重要度分析得到各指标的权重分别为0.2、0.2、0.1、0.3和0.2。在此基础上构建了农产品质量安全事件等级评价模型;将模型计算语言化,以WebGIS为工具,设计与实现了农产品质量安全应急管理系统;通过模拟某次农产品质量安全事件表明,该系统能提高对事件的处置能力,也便于直观看到处置过程,为进行农产品质量安全应急管理提供参考。

According to the characteristics of farm products quality safety incidents, ten samples were processed by the reduction and analysis of attributes using the rough set method, and five indexes were determined. The indexes was toxicity of pollution source, scope of pollution influence, number of death, number of injuries and population density, whose weights were 0.2, 0.2, 0.1, 0.3 and 0.2, respectively, according to the importance analysis of the indexes. Based on these, a grade evaluation model of farm products quality safety accidents was established. An emergency management system of farm products quality safety was designed and implemented by programming the grade evaluation model using WebGIS. Through simulating a particular farm products quality safety accident, the result showed that the system could improve the handling ability of the accident, and realized the visualization of the disposal process. The system can provide consultation for farm products quality safety management.