【摘要】 依据灰色决策的基本原理，结合环境质量评价的实际情况，采用宽域式结构建立隶属函数，提出宽域灰色决策法，并以水质评价为例进行了尝试。结果表明。宽域灰色决策法的评价结果比较符合实际状况，比模糊数学法和灰色聚类法的评价结果更为合理。更多还原

【Abstract】 Based on the fundamentals of the grey decision method and combining with thereality of environmental quality assessment,a wide-domain grey decision znetbod was putforward by establishir1g subordinate functions with wide-domain structure, As an example,ancase study on its application in water quality evaluation was carried out with more reasonableresults than those obtained by the fuzzy mathematics method and the grey classificationmethod.更多还原