Nitrogen and Phosphorus Removal from Agricultural Runoff in Integrated Buffer Zones
| Autor: | Flemming Gertz, Joachim Audet, Carl Christian Hoffmann, Sara Egemose, Søren Ejling Larsen, Dominik Zak, Brian Kronvang, Ane Kjeldgaard, Henning S. Jensen, Peter Feuerbach, Charlotte Adam Jørgensen, Mette Vodder Carstensen |
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| Rok vydání: | 2018 |
| Předmět: |
Riparian buffer
Hydraulic retention time RIPARIAN ZONES Water flow Nitrogen Denmark chemistry.chemical_element CONSTRUCTED WETLANDS 010501 environmental sciences 01 natural sciences Alder Nutrient ORGANIC-CARBON Environmental Chemistry 0105 earth and related environmental sciences Hydrology RELEASE geography geography.geographical_feature_category biology FRESH-WATER Phosphorus Agriculture 04 agricultural and veterinary sciences General Chemistry DENITRIFICATION biology.organism_classification Europe Alnus glutinosa chemistry WATER-QUALITY Tile drainage EUTROPHICATION 040103 agronomy & agriculture HARMFUL ALGAL BLOOMS 0401 agriculture forestry and fisheries Environmental science NITRATE |
| Zdroj: | Zak, D H, Kronvang, B, Carstensen, M V, Hoffmann, C C, Kjeldgaard, A, Larsen, S E, Audet, J, Egemose, S, Jørgensen, C A, Feuerbach, P, Gertz, F & Jensen, H S 2018, ' Nitrogen and Phosphorus Removal from Agricultural Runoff in Integrated Buffer Zones ', Environmental Science and Technology, vol. 52, no. 11, pp. 6508–6517 . https://doi.org/10.1021/acs.est.8b01036 Zak, D, Kronvang, B, Carstensen, M, Hoffmann, C C, Kjeldgaard, A, Larsen, S E, Audet, J, Egemose, S, Jorgensen, C A, Feuerbach, P, Gertz, F & Jensen, H S 2018, ' Nitrogen and Phosphorus Removal from Agricultural Runoff in Integrated Buffer Zones ', Environmental Science & Technology, vol. 52, no. 11, pp. 6508-6517 . https://doi.org/10.1021/acs.est.8b01036 Environmental science & technology, 52(11):6508-6517 |
| ISSN: | 1520-5851 |
| DOI: | 10.1021/acs.est.8b01036 |
| Popis: | Integrated buffer zones (IBZs) represent a novel form of edge-of-field technology in Northwest Europe. Contrary to the common riparian buffer strips, IBZs collect tile drainage water from agricultural fields by combining a ditch-like pond (POND), where soil particles can settle, and a flow-through filter bed (FILTERBED) planted with Alnus glutinosa (L.), a European alder (black alder). The first experimental IBZ facility was constructed and thoroughly tested in Denmark for its capability to retain various nitrogen (N) and phosphorus (P) species within the first three years after construction. We calculated the water and nutrient budget for the total IBZ and for the two compartments, POND and FILTERBED, separately. Furthermore, a tracer experiment using sodium bromide was conducted in order to trace the water flow and estimate the hydraulic residence time in the FILTERBEDs. The monthly average removal efficiency amounted to 10-67% for total N and 31-69% for total P, with performance being highest during the warm season. Accordingly, we suggest that IBZs may be a valuable modification of dry buffer strips in order to mitigate the adverse impacts of high nutrient loading from agricultural fields on the aquatic environment. |
| Databáze: | OpenAIRE |
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