Using the calculation method of the tolerance value provided by lenat ( 1993 ) , eighty - one tolerance values of macro - invertebrate taxa were acquired . among them , two genera in 2 families in coleoptera , 2 genera inl family in megaloptera , 14 genera in 7 families in ephemeroptera , 2 genera in 2 families in plecoptera , 6 genera in 5 familes in trichoptera , 1 geneus and 3 families in odonata , 12 genera and 3 sub - families in 3 families in diptera , 5 species in 2 genera in mollusca , 4 species in 1 genus in annipula and others 1 geneus 其中，依据lenat计算耐污值的方法，确定了81个分类单元的耐污值，包括鞘翅目3科2属，广翅目1科2属，蚌游目7科14属，精翅目2科2属，毛翅目6科7属，靖蜒目3科1属， t翅目3科3亚科12属，软体动物2属5种，环节动物1属4种，扁形动物1属。
