Appraisal of phosphorus and sediment transfer in three pilot areas identified for the catchment sensitive farming initiative in England: application of the prototype PSYCHIC model

Soil Use and Management - Tập 23 Số s1 - Trang 117-132 - 2007
Adrian L. Collins1, Johan Strömqvist1, Paul Davison1, E.I. Lord1
1Environment Systems, ADAS, Woodthorne, Wergs Road, Wolverhampton WV6 8TQ, UK

Tóm tắt

AbstractThe England Catchment Sensitive Farming Delivery Initiative has recently identified 40 priority catchments where stakeholders require assistance with tackling harmful diffuse pollution, including that associated with phosphorus (P) and sediment. Newly appointed Catchment Sensitive Farming Officers require appropriate means of targeting P and sediment mitigation methods. In this context, the prototype PSYCHIC (Phosphorus and Sediment Yield CHaracterization In Catchments) model was used to characterize three pilot catchments in England, namely: the Derwent‐Cocker (626 km2), Teme (1623 km2) and Wensum (689 km2). Modelled annual total P export from the Derwent‐Cocker catchment is 1.2 kg ha−1 year−1, compared with 0.6 kg ha−1 year−1from the Teme catchment and 0.9 kg ha−1 year−1from the Wensum catchment. Corresponding sediment export is predicted at 271 kg ha−1 year−1, 124 kg ha−1 year−1and 70 kg ha−1 year−1, respectively. The findings highlight the importance of factors including P application rates, soil types and the increased connectivity provided by assisted drainage in determining pollution ‘hotspots’. Model output is being used to engage stakeholders and devise abatement strategies.

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Soil Use and Management

Tập 23 Số s1

117-132

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