EPL discharged in year 2001 was about 437.0 kt NO3- equivalency, of which the greatest contribution was from agricultural production sector, next industrial production sector and human living.

• 结果表明；2001年排放的富营养化污染负荷量约为437.；0kt NO3-当量；其中贡献最大的是农业生产部门；其次是工业生产部门和人类生活