摘要
针对DRASTIC模型中需要人为确定各项指标权重的缺点,将熵权系数法与DRASTIC模型相结合,建立了基于熵权的DRASTIC模型。在新的耦合模型中,各项指标的权重由客观数据计算得到,消除了人为确定权重的主观误差。将该模型应用于地下水脆弱性评价之中,对大连市5个水文地质区段的地下水脆弱性进行了评价。评价结果表明,所建立的新模型是科学合理的,其结果更加客观。表6,参7。
The DRASTIC model based on entropy weigh is established.It is a new method that combines entropy weight coefficient method with the DRASTIC model.In the new method, all of the weight of indexes can be acquired from objective data, so that the subjective errors are eliminated. Appling the new evaluation model, we evaluate the groundwater vulnerability of 5 hydro-geologic sections in Dalian. It is showed that the new method is scientific and rational, and its result is more objective.
出处
《农业系统科学与综合研究》
CSCD
2007年第1期74-77,共4页
System Sciemces and Comprehensive Studies In Agriculture
基金
国家自然科学基金(30400275)
黑龙江省青年科学基金(QC04C28)
关键词
地下水脆弱性
DRASTIC
熵权系数法
评价
groundwater vulnerability
DRASTIC
entropy weight coefficient method
evaluation
