流域农业非点源污染磷指数评价法研究进展

Phosphorus Index Assessment Method for Watershed Agricultural Non-Point Sources Pollution

磷指数评价法是确定流域内磷流失的关键源区和进行合理的农业非点源污染控制的有效方法。国外磷指数评价法的研究工作起步较早,根据计算方法的不同,可以分为两个发展阶段:1993年到2000年为第一阶段,以Lemunyon和Gilbert提出的磷指数评价计算方法为代表;2000年以后以Gburek等提出的磷指数评价计算方法为代表。经过不断发展完善,磷指数评价法在国外得到了广泛的应用,但在国内非点源磷污染评价方面的工作刚刚起步,还没有建立起适合我国农业特点的流域农业非点源磷污染评价指标体系和方法。

Phosphorus index assessment method is an effective method to confirm the critical source areas of phosphorus loss in watershed, by which the proper control on agricultural non-point sources pollution can be done. The method appeared early abroad, based on which, the difference of calculating method, the developmental stage of the phosphorus index assessment method can be divided into two phases. The first stage was from 1993 to 2000, and the calculating method brought forward by Lemunyon and Gilbert served as the represent study in this stage. The method brought forward by Gburek el al was the represent of the second phase, after 2000. With the continual development, the phosphorus index assessment method has been in use worldwide. In China, the assessment work on the non-point sources phosphorus pollution is just at the beginning. The assessment index system and the method of the watershed agricultural non-point sources phosphorus pollution, have not yet been established.