运用修正的人力资本法、生产率变动法、成果参照法等环境经济学方法，计算出衡水市区1996-2000年各年的大气污染经济损失。
We can calculate the loss caught by the air pollution from the year 1996 to 2000 by using the methods of environmental economy such as human capital methods , productivity changing methods , and so on .
生产率变动法