And then the biological indicator methods, three diversity indexes(Simpson, Shannon-Weaner, Margalef )and the Species Pollution Value (SPY), the Community Pollution Value (CPV) were used to make the biological evaluation separately.

• 同时利用指示生物法、三种多样性指数：Simpson多样性指数、Shannon-Weaner多样性指数、Margalef多样性指数及种类污染值(SpeciesPollution Value，SPV)和群落污染值(Community Pollution Value，CPV)，分别对内河进行水质生物学评价。