Sediment and phosphorus delivery from field to river via land drains in England and Wales. A risk assessment using field and national databases
Agricultural land drains can facilitate the transfer of sediment and attached phosphorus (P) from land to surface waters. A national risk map is being developed that will identify areas of England and Wales that are most susceptible to such P losses. The map is based on data from various sources, in...
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Veröffentlicht in: | Soil use and management 2003-12, Vol.19 (4), p.347-355 |
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creator | CHAPMAN, A. S FOSTER, I. D. L LEES, J. A HODGKINSON, R. J JACKSON, R. H |
description | Agricultural land drains can facilitate the transfer of sediment and attached phosphorus (P) from land to surface waters. A national risk map is being developed that will identify areas of England and Wales that are most susceptible to such P losses. The map is based on data from various sources, including field studies, laboratory rainfall simulations, and secondary sources. The factors most strongly related to sediment P loss were identified as soil class, rainfall, soil moisture deficit, land use, and type and condition of land drains. These factors were weighted to provide an estimate of risk, and the combined total risk was used to map national risk estimates at a 25 square km resolution. The resulting map indicates that large areas of England and Wales may be at risk of subsurface sediment and P transfer from agricultural land to rivers. Further work is needed to understand these findings at the farm level. |
doi_str_mv | 10.1079/SUM2003208 |
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These factors were weighted to provide an estimate of risk, and the combined total risk was used to map national risk estimates at a 25 square km resolution. The resulting map indicates that large areas of England and Wales may be at risk of subsurface sediment and P transfer from agricultural land to rivers. Further work is needed to understand these findings at the farm level.</description><identifier>ISSN: 0266-0032</identifier><identifier>EISSN: 1475-2743</identifier><identifier>DOI: 10.1079/SUM2003208</identifier><identifier>CODEN: SUMAEU</identifier><language>eng</language><publisher>Wallingford: CAB International</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; Fundamental and applied biological sciences. 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H</creatorcontrib><title>Sediment and phosphorus delivery from field to river via land drains in England and Wales. A risk assessment using field and national databases</title><title>Soil use and management</title><description>Agricultural land drains can facilitate the transfer of sediment and attached phosphorus (P) from land to surface waters. A national risk map is being developed that will identify areas of England and Wales that are most susceptible to such P losses. The map is based on data from various sources, including field studies, laboratory rainfall simulations, and secondary sources. The factors most strongly related to sediment P loss were identified as soil class, rainfall, soil moisture deficit, land use, and type and condition of land drains. These factors were weighted to provide an estimate of risk, and the combined total risk was used to map national risk estimates at a 25 square km resolution. The resulting map indicates that large areas of England and Wales may be at risk of subsurface sediment and P transfer from agricultural land to rivers. Further work is needed to understand these findings at the farm level.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Fundamental and applied biological sciences. 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subjects | Agronomy. Soil science and plant productions Biological and medical sciences Fundamental and applied biological sciences. Psychology Soil and water pollution Soil science |
title | Sediment and phosphorus delivery from field to river via land drains in England and Wales. A risk assessment using field and national databases |
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