Title
Dissolved phosphorus transport from soil to surface water in catchments with different land use
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Oslo ,
Subject
Chemistry
Biology
Source (journal)
Ambio: a journal of the human environment research and management. - Oslo
Volume/pages
44(2015) :s:[2] , p. S228-S240
ISSN
0044-7447
ISI
000349411600006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Diffuse phosphorus (P) export from agricultural land to surface waters is a significant environmental problem. It is critical to determine the natural background P losses from diffuse sources, but their identification and quantification is difficult. In this study, three headwater catchments with differing land use (arable, pasture and forest) were monitored for 3 years to quantify exports of dissolved (<0.45 µm) reactive P and total dissolved P. Mean total P exports from the arable catchment ranged between 0.08 and 0.28 kg ha−1 year−1. Compared with the reference condition (forest), arable land and pasture exported up to 11-fold more dissolved P. The contribution of dissolved (<0.45 µm) unreactive P was low to negligible in every catchment. Agricultural practices can exert large pressures on surface waters that are controlled by hydrological factors. Adapting policy to cope with these factors is needed for lowering these pressures in the future.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/f68a01/d0160942.pdf
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