A sub-field scale critical source area index for legacy phosphorus management using high resolution data
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- 作者：I.A. Thomasa ; b ; ian.thomas@teagasc.ie" class="auth_mail" title="E-mail the corresponding author ; ianathomas@hotmail.co.uk" class="auth_mail" title="E-mail the corresponding author ; P.-E. Mellandera ; per-erik.mellander@teagasc.ie" class="auth_mail" title="E-mail the corresponding author ; P.N.C. Murphyc ; d ; paul.murphy@ucd.ie" class="auth_mail" title="E-mail the corresponding author ; O. Fentone ; owen.fenton@teagasc.ie" class="auth_mail" title="E-mail the corresponding author ; O. Shinea ; oliver.shine@teagasc.ie" class="auth_mail" title="E-mail the corresponding author ; F. Djodjicf ; faruk.djodjic@slu.se" class="auth_mail" title="E-mail the corresponding author ; P. Dunlopb ; p.dunlop@ulster.ac.uk" class="auth_mail" title="E-mail the corresponding author ; P. Jordana ; b ; p.jordan@ulster.ac.uk" class="auth_mail" title="E-mail the corresponding author
- 关键词：Critical source area ; Diffuse pollution ; Phosphorus ; LiDAR DEM ; Agriculture ; Hydrologically sensitive area
- 刊名：Agriculture, Ecosystems & Environment
- 出版年：2016
- 出版时间：3 October 2016
- 年：2016
- 卷：233
- 期：Complete
- 页码：238-252
- 全文大小：5253 K
文摘
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A new GIS-based tool identifies CSAs of legacy P at the sub-field scale.
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The index uses water extractable P, a soil topographic index and LiDAR DEMs.
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The CSA Index was evaluated against measured total reactive P loads in quickflow.
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HSAs were more important in P CSAs than high soil P or mobilisation potential.
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The tool allows targeted, cost-effective mitigation at delivery points and pathways.