Mitigating the Transfer of Sediment and Pollutants from Soils to Water

摘要

Excess nitrogen and phosphorus production, with resulting pollution of soils and water, has been identified as one of nine main areas contributing to a deteriorating global environment. Legislation has resulted in a reduction of pollution from point sources, so that the significance of diffuse (non-point) sources and the contribution from agriculture in particular, has become increasingly important. Land management approaches can help to break the connection between sources of runoff and the waterways, with the aim of preventing or reducing problems such as siltation and eutrophication. However, there is a shortage of evidence for the effectiveness and viability of such mitigation options in the UK.To address this we carried out field scale and catchment scale trials of a range of mitigation measures focussing on both within field and edge of field measures. Here we focus on two promising approaches: tramline disruption and field wetlands.