Indicial formula of exponent product on environmental quality based on normalized index value
基于指标规范值的环境质量的指数幂乘积指数公式

The values of grading standards of traditional exponent product on environmental quality, which vary with the differences of different indexes and index numbers, could not be standardized and harmonized. On the basis of the setting proper reference values and gauge transformation formulae for indexes, the present work made the differences of normalized values for same grading standard as small as possible, meantime, that for different grading standards as large as possible in the similar environment, so that the each index expressed with the normalized value equivalents to a normalized index in the similar environment. Therefore, the comprehensive indicial values of exponent product for any m numbers of indicators can have a common grading standard value. The formula exhibits the characteristics of universality comparablity as well as versatility.